diff --git a/docs/api/README.md b/docs/api/README.md
index add09fd98..dd8f98d5c 100644
--- a/docs/api/README.md
+++ b/docs/api/README.md
@@ -70,7 +70,7 @@ Please note that our `endpoint` parameters were previously referenced as `source
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/
+The base URL is: https://api.delphi.cmu.edu/epidata/
 
 ## Specifying Epiweeks, Dates, and Lists
 
@@ -154,7 +154,7 @@ The parameters available for each source are documented in each linked source-sp
 # Example URLs
 
 ### FluView on 2015w01 (national)
-https://delphi.cmu.edu/epidata/fluview/?regions=nat&epiweeks=201501
+https://api.delphi.cmu.edu/epidata/fluview/?regions=nat&epiweeks=201501
 
 ```json
 {
@@ -184,7 +184,7 @@ https://delphi.cmu.edu/epidata/fluview/?regions=nat&epiweeks=201501
 ```
 
 ### Wikipedia Access article "influenza" on 2020w01
-https://delphi.cmu.edu/epidata/wiki/?language=en&articles=influenza&epiweeks=202001
+https://api.delphi.cmu.edu/epidata/wiki/?language=en&articles=influenza&epiweeks=202001
 
 ```json
 {
diff --git a/docs/api/afhsb.md b/docs/api/afhsb.md
index 0c7056954..d53ad643e 100644
--- a/docs/api/afhsb.md
+++ b/docs/api/afhsb.md
@@ -19,7 +19,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/afhsb/
+The base URL is: https://api.delphi.cmu.edu/epidata/afhsb/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/api_keys.md b/docs/api/api_keys.md
index 6c3d0249a..37276f406 100644
--- a/docs/api/api_keys.md
+++ b/docs/api/api_keys.md
@@ -44,7 +44,7 @@ there are several ways to use your key to authenticate your requests:
 The request parameter “api_key” can be used to pass the API key to the server.
 Example:
 
-    http://delphi.cmu.edu/epidata/covidcast/meta?api_key=your_api_key_here
+    https://api.delphi.cmu.edu/epidata/covidcast/meta?api_key=your_api_key_here
 
 ### Via Basic Authentication
 
@@ -52,7 +52,7 @@ Another method is using the HTTP basic authorization header with the username
 "epidata" and the API key as the password. Example:
 
 ```
-curl -u 'epidata:your_api_key_here' https://delphi.cmu.edu/epidata/covidcast/meta
+curl -u 'epidata:your_api_key_here' https://api.delphi.cmu.edu/epidata/covidcast/meta
 ```
 
 ### Via Bearer Token
@@ -60,5 +60,5 @@ curl -u 'epidata:your_api_key_here' https://delphi.cmu.edu/epidata/covidcast/met
 Another method is providing the key in a bearer token header. Example:
 
 ```
-curl -H 'Authorization: Bearer your_api_key_here' https://delphi.cmu.edu/epidata/covidcast/meta
+curl -H 'Authorization: Bearer your_api_key_here' https://api.delphi.cmu.edu/epidata/covidcast/meta
 ```
diff --git a/docs/api/cdc.md b/docs/api/cdc.md
index b71cab244..25295e512 100644
--- a/docs/api/cdc.md
+++ b/docs/api/cdc.md
@@ -19,7 +19,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/cdc/
+The base URL is: https://api.delphi.cmu.edu/epidata/cdc/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/covid_hosp.md b/docs/api/covid_hosp.md
index 0509cd283..d61c6eebf 100644
--- a/docs/api/covid_hosp.md
+++ b/docs/api/covid_hosp.md
@@ -46,7 +46,7 @@ dataset was published by HHS.
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/covid_hosp_state_timeseries/
+The base URL is: https://api.delphi.cmu.edu/epidata/covid_hosp_state_timeseries/
 
 See [this documentation](README.md) for details on specifying locations and dates.
 
@@ -82,7 +82,7 @@ If `issues` is not specified, then the most recent issue is used by default.
 # Example URLs
 
 ### MA on 2020-05-10 (per most recent issue)
-https://delphi.cmu.edu/epidata/covid_hosp_state_timeseries/?states=MA&dates=20200510
+https://api.delphi.cmu.edu/epidata/covid_hosp_state_timeseries/?states=MA&dates=20200510
 
 ```json
 {
diff --git a/docs/api/covid_hosp_facility.md b/docs/api/covid_hosp_facility.md
index bad1e1690..fe24bb0e6 100644
--- a/docs/api/covid_hosp_facility.md
+++ b/docs/api/covid_hosp_facility.md
@@ -37,7 +37,7 @@ HHS. New versions are expected to be published roughly weekly.
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/covid_hosp_facility/
+The base URL is: https://api.delphi.cmu.edu/epidata/covid_hosp_facility/
 
 See [this documentation](README.md) for details on specifying locations and dates.
 
@@ -87,7 +87,7 @@ has been renamed here for clarity.
 # Example URLs
 
 ### Moses Taylor Hospital (Scranton, PA) on the first collection week of December 2020 (per most recent issue)
-https://delphi.cmu.edu/epidata/covid_hosp_facility/?hospital_pks=390119&collection_weeks=20201201-20201207
+https://api.delphi.cmu.edu/epidata/covid_hosp_facility/?hospital_pks=390119&collection_weeks=20201201-20201207
 
 ```json
 {
diff --git a/docs/api/covid_hosp_facility_lookup.md b/docs/api/covid_hosp_facility_lookup.md
index 3a40dfd55..25e97c956 100644
--- a/docs/api/covid_hosp_facility_lookup.md
+++ b/docs/api/covid_hosp_facility_lookup.md
@@ -30,7 +30,7 @@ This data source provides metadata about healthcare facilities in the US.
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/covid_hosp_facility_lookup/
+The base URL is: https://api.delphi.cmu.edu/epidata/covid_hosp_facility_lookup/
 
 See [this documentation](README.md) for details on specifying locations and dates.
 
@@ -72,7 +72,7 @@ Use the `hospital_pk` value when querying
 # Example URLs
 
 ### Lookup facilities in the city of Southlake (TX)
-https://delphi.cmu.edu/epidata/covid_hosp_facility_lookup/?city=southlake
+https://api.delphi.cmu.edu/epidata/covid_hosp_facility_lookup/?city=southlake
 
 ```json
 {
diff --git a/docs/api/covidcast.md b/docs/api/covidcast.md
index c1cb625a2..245f6fe03 100644
--- a/docs/api/covidcast.md
+++ b/docs/api/covidcast.md
@@ -92,7 +92,7 @@ sources and signals.
 ## Constructing API Queries
 
 The COVIDcast API is based on HTTP GET queries and returns data in JSON form.
-The base URL is `https://api.covidcast.cmu.edu/epidata/covidcast/`.
+The base URL is `https://api.delphi.cmu.edu/epidata/covidcast/`.
 
 See [this documentation](README.md) for details on specifying epiweeks, dates,
 and lists.
@@ -207,7 +207,7 @@ The `fields` parameter can be used to limit which fields are included in each re
 
 ### Facebook Survey CLI on 2020-04-06 to 2010-04-10 (county 06001)
 
-https://api.covidcast.cmu.edu/epidata/covidcast/?data_source=fb-survey&signal=smoothed_cli&time_type=day&geo_type=county&time_values=20200406-20200410&geo_value=06001
+https://api.delphi.cmu.edu/epidata/covidcast/?data_source=fb-survey&signal=smoothed_cli&time_type=day&geo_type=county&time_values=20200406-20200410&geo_value=06001
 
 ```json
 {
@@ -229,7 +229,7 @@ https://api.covidcast.cmu.edu/epidata/covidcast/?data_source=fb-survey&signal=sm
 
 ### Facebook Survey CLI on 2020-04-06 (all counties)
 
-https://api.covidcast.cmu.edu/epidata/covidcast/?data_source=fb-survey&signal=smoothed_cli&time_type=day&geo_type=county&time_values=20200406&geo_value=*
+https://api.delphi.cmu.edu/epidata/covidcast/?data_source=fb-survey&signal=smoothed_cli&time_type=day&geo_type=county&time_values=20200406&geo_value=*
 
 ```json
 {
diff --git a/docs/api/covidcast_meta.md b/docs/api/covidcast_meta.md
index e924f78fe..08c3990c8 100644
--- a/docs/api/covidcast_meta.md
+++ b/docs/api/covidcast_meta.md
@@ -13,7 +13,7 @@ geographic levels at which they are reported.
 
 ## The API
 
-The base URL is: https://api.covidcast.cmu.edu/epidata/covidcast_meta/
+The base URL is: https://api.delphi.cmu.edu/epidata/covidcast_meta/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -45,7 +45,7 @@ None required.
 
 ## Example URLs
 
-https://api.covidcast.cmu.edu/epidata/covidcast_meta/
+https://api.delphi.cmu.edu/epidata/covidcast_meta/
 
 ```json
 {
diff --git a/docs/api/delphi.md b/docs/api/delphi.md
index 8b12ba8d3..1cc645b0a 100644
--- a/docs/api/delphi.md
+++ b/docs/api/delphi.md
@@ -19,7 +19,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/delphi/
+The base URL is: https://api.delphi.cmu.edu/epidata/delphi/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -58,7 +58,7 @@ See [this documentation](README.md) for details on specifying epiweeks, dates, a
 # Example URLs
 
 ### Delphi on 2020w01 (EC)
-https://delphi.cmu.edu/epidata/delphi/?system=ec&epiweek=202001
+https://api.delphi.cmu.edu/epidata/delphi/?system=ec&epiweek=202001
 
 ```json
 {
diff --git a/docs/api/dengue_nowcast.md b/docs/api/dengue_nowcast.md
index 693356ddb..abaf15c08 100644
--- a/docs/api/dengue_nowcast.md
+++ b/docs/api/dengue_nowcast.md
@@ -20,7 +20,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/dengue_nowcast/
+The base URL is: https://api.delphi.cmu.edu/epidata/dengue_nowcast/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/dengue_sensors.md b/docs/api/dengue_sensors.md
index 15d60c1e3..470861bbf 100644
--- a/docs/api/dengue_sensors.md
+++ b/docs/api/dengue_sensors.md
@@ -20,7 +20,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/dengue_sensors/
+The base URL is: https://api.delphi.cmu.edu/epidata/dengue_sensors/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/ecdc_ili.md b/docs/api/ecdc_ili.md
index ac704a7fe..399f7f015 100644
--- a/docs/api/ecdc_ili.md
+++ b/docs/api/ecdc_ili.md
@@ -19,7 +19,7 @@ ECDC ILI data from ECDC website. ... <!-- TODO -->
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/ecdc_ili/
+The base URL is: https://api.delphi.cmu.edu/epidata/ecdc_ili/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/flusurv.md b/docs/api/flusurv.md
index 32c097610..b33f5c22d 100644
--- a/docs/api/flusurv.md
+++ b/docs/api/flusurv.md
@@ -26,7 +26,7 @@ See also:
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/flusurv/
+The base URL is: https://api.delphi.cmu.edu/epidata/flusurv/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -79,7 +79,7 @@ Notes:
 # Example URLs
 
 ### FluSurv on 2020w01 (CA)
-https://delphi.cmu.edu/epidata/flusurv/?locations=ca&epiweeks=202001
+https://api.delphi.cmu.edu/epidata/flusurv/?locations=ca&epiweeks=202001
 
 ```json
 {
diff --git a/docs/api/fluview.md b/docs/api/fluview.md
index 79ba9c276..be8d6e825 100644
--- a/docs/api/fluview.md
+++ b/docs/api/fluview.md
@@ -25,7 +25,7 @@ Influenza-like illness (ILI) from U.S. Outpatient Influenza-like Illness Surveil
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/fluview/
+The base URL is: https://api.delphi.cmu.edu/epidata/fluview/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -80,7 +80,7 @@ Notes:
 # Example URLs
 
 ### FluView on 2015w01 (national)
-https://delphi.cmu.edu/epidata/fluview/?regions=nat&epiweeks=201501
+https://api.delphi.cmu.edu/epidata/fluview/?regions=nat&epiweeks=201501
 
 ```json
 {
@@ -111,11 +111,11 @@ https://delphi.cmu.edu/epidata/fluview/?regions=nat&epiweeks=201501
 
 ### FluView in HHS Regions 4 and 6 for the 2014/2015 flu season
 
-https://delphi.cmu.edu/epidata/fluview/?regions=hhs4,hhs6&epiweeks=201440-201520
+https://api.delphi.cmu.edu/epidata/fluview/?regions=hhs4,hhs6&epiweeks=201440-201520
 
 ### Updates to FluView on 2014w53, reported from 2015w01 through 2015w10 (national)
 
-https://delphi.cmu.edu/epidata/fluview/?regions=nat&epiweeks=201453&issues=201501-201510
+https://api.delphi.cmu.edu/epidata/fluview/?regions=nat&epiweeks=201453&issues=201501-201510
 
 
 # Code Samples
diff --git a/docs/api/fluview_clinical.md b/docs/api/fluview_clinical.md
index 259a07c02..d5fd12db2 100644
--- a/docs/api/fluview_clinical.md
+++ b/docs/api/fluview_clinical.md
@@ -20,7 +20,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/fluview_clinical/
+The base URL is: https://api.delphi.cmu.edu/epidata/fluview_clinical/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -66,7 +66,7 @@ If neither is specified, the current issues are used.
 # Example URLs
 
 ### FluView Clinical on 2020w01 (national)
-https://delphi.cmu.edu/epidata/fluview_clinical/?regions=nat&epiweeks=202001
+https://api.delphi.cmu.edu/epidata/fluview_clinical/?regions=nat&epiweeks=202001
 
 ```json
 {
diff --git a/docs/api/fluview_meta.md b/docs/api/fluview_meta.md
index 090865154..c3fbb25b4 100644
--- a/docs/api/fluview_meta.md
+++ b/docs/api/fluview_meta.md
@@ -20,7 +20,7 @@ Returns information about the [`fluview` endpoint](fluview.md).
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/fluview_meta/
+The base URL is: https://api.delphi.cmu.edu/epidata/fluview_meta/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -42,7 +42,7 @@ There are no parameters for this endpoint.
 # Example URLs
 
 ### FluView Metadata
-https://delphi.cmu.edu/epidata/fluview_meta/
+https://api.delphi.cmu.edu/epidata/fluview_meta/
 
 ```json
 {
diff --git a/docs/api/gft.md b/docs/api/gft.md
index c06574e70..72898cb9b 100644
--- a/docs/api/gft.md
+++ b/docs/api/gft.md
@@ -23,7 +23,7 @@ Estimate of influenza activity based on volume of certain search queries. Google
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/gft/
+The base URL is: https://api.delphi.cmu.edu/epidata/gft/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -50,7 +50,7 @@ See [this documentation](README.md) for details on specifying epiweeks, dates, a
 # Example URLs
 
 ### Google Flu Trends on 2015w01 (national)
-https://delphi.cmu.edu/epidata/gft/?locations=nat&epiweeks=201501
+https://api.delphi.cmu.edu/epidata/gft/?locations=nat&epiweeks=201501
 
 ```json
 {
diff --git a/docs/api/ght.md b/docs/api/ght.md
index ee5d2be4c..107d5b10e 100644
--- a/docs/api/ght.md
+++ b/docs/api/ght.md
@@ -19,7 +19,7 @@ Estimate of influenza activity based on volume of certain search queries. ... <!
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/ght/
+The base URL is: https://api.delphi.cmu.edu/epidata/ght/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/kcdc_ili.md b/docs/api/kcdc_ili.md
index 889db68dc..b516ce04e 100644
--- a/docs/api/kcdc_ili.md
+++ b/docs/api/kcdc_ili.md
@@ -18,7 +18,7 @@ KCDC ILI data from KCDC website. ... <!-- TODO -->
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/kcdc_ili/
+The base URL is: https://api.delphi.cmu.edu/epidata/kcdc_ili/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/meta.md b/docs/api/meta.md
index 1f4822d17..bccd7c0fd 100644
--- a/docs/api/meta.md
+++ b/docs/api/meta.md
@@ -19,7 +19,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/meta/
+The base URL is: https://api.delphi.cmu.edu/epidata/meta/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -38,7 +38,7 @@ None.
 
 # Example URLs
 
-https://delphi.cmu.edu/epidata/meta/
+https://api.delphi.cmu.edu/epidata/meta/
 
 ```json
 {
diff --git a/docs/api/meta_afhsb.md b/docs/api/meta_afhsb.md
index 10c7ac478..6ba294772 100644
--- a/docs/api/meta_afhsb.md
+++ b/docs/api/meta_afhsb.md
@@ -19,7 +19,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/meta_afhsb/
+The base URL is: https://api.delphi.cmu.edu/epidata/meta_afhsb/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/meta_norostat.md b/docs/api/meta_norostat.md
index 57fc14ebe..217b20fbf 100644
--- a/docs/api/meta_norostat.md
+++ b/docs/api/meta_norostat.md
@@ -19,7 +19,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/meta_norostat/
+The base URL is: https://api.delphi.cmu.edu/epidata/meta_norostat/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/nidss_dengue.md b/docs/api/nidss_dengue.md
index 40d087d6a..ab7349658 100644
--- a/docs/api/nidss_dengue.md
+++ b/docs/api/nidss_dengue.md
@@ -23,7 +23,7 @@ Counts of confirmed dengue cases from Taiwan's NIDSS.
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/nidss_dengue/
+The base URL is: https://api.delphi.cmu.edu/epidata/nidss_dengue/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -50,7 +50,7 @@ See [this documentation](README.md) for details on specifying epiweeks, dates, a
 # Example URLs
 
 ### NIDSS Dengue on 2015w01 (nationwide)
-https://delphi.cmu.edu/epidata/nidss_dengue/?locations=nationwide&epiweeks=201501
+https://api.delphi.cmu.edu/epidata/nidss_dengue/?locations=nationwide&epiweeks=201501
 
 ```json
 {
diff --git a/docs/api/nidss_flu.md b/docs/api/nidss_flu.md
index 08699ea9a..4af0d61d6 100644
--- a/docs/api/nidss_flu.md
+++ b/docs/api/nidss_flu.md
@@ -25,7 +25,7 @@ Outpatient ILI from Taiwan's National Infectious Disease Statistics System (NIDS
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/nidss_flu/
+The base URL is: https://api.delphi.cmu.edu/epidata/nidss_flu/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -67,7 +67,7 @@ If neither is specified, the current issues are used.
 # Example URLs
 
 ### NIDSS Flu on 2015w01 (nationwide)
-https://delphi.cmu.edu/epidata/nidss_flu/?regions=nationwide&epiweeks=201501
+https://api.delphi.cmu.edu/epidata/nidss_flu/?regions=nationwide&epiweeks=201501
 
 ```json
 {
diff --git a/docs/api/norostat.md b/docs/api/norostat.md
index 4019020b7..6e801116c 100644
--- a/docs/api/norostat.md
+++ b/docs/api/norostat.md
@@ -19,7 +19,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/norostat/
+The base URL is: https://api.delphi.cmu.edu/epidata/norostat/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/nowcast.md b/docs/api/nowcast.md
index dfdecbc54..988c83810 100644
--- a/docs/api/nowcast.md
+++ b/docs/api/nowcast.md
@@ -25,7 +25,7 @@ A nowcast of U.S. national, regional, and state-level (weighted) %ILI, available
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/nowcast/
+The base URL is: https://api.delphi.cmu.edu/epidata/nowcast/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -53,7 +53,7 @@ See [this documentation](README.md) for details on specifying epiweeks, dates, a
 # Example URLs
 
 ### ILI Nearby on 2020w01 (national)
-https://delphi.cmu.edu/epidata/nowcast/?locations=nat&epiweeks=202001
+https://api.delphi.cmu.edu/epidata/nowcast/?locations=nat&epiweeks=202001
 
 ```json
 {
diff --git a/docs/api/paho_dengue.md b/docs/api/paho_dengue.md
index 3837cb43c..46e1706c2 100644
--- a/docs/api/paho_dengue.md
+++ b/docs/api/paho_dengue.md
@@ -19,7 +19,7 @@ General topics not specific to any particular endpoint are discussed in the
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/paho_dengue/
+The base URL is: https://api.delphi.cmu.edu/epidata/paho_dengue/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/quidel.md b/docs/api/quidel.md
index 9139ca59c..0abb412ca 100644
--- a/docs/api/quidel.md
+++ b/docs/api/quidel.md
@@ -21,7 +21,7 @@ Data provided by Quidel Corp., which contains flu lab test results.
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/quidel/
+The base URL is: https://api.delphi.cmu.edu/epidata/quidel/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
diff --git a/docs/api/sensors.md b/docs/api/sensors.md
index 5175326e0..c4430e1f1 100644
--- a/docs/api/sensors.md
+++ b/docs/api/sensors.md
@@ -29,7 +29,7 @@ the COVID-19 pandemic.
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/sensors/
+The base URL is: https://api.delphi.cmu.edu/epidata/sensors/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -70,7 +70,7 @@ Notes:
 # Example URLs
 
 ### Delphi's Digital Surveillance SAR3 Sensor on 2020w01 (national)
-https://delphi.cmu.edu/epidata/sensors/?names=sar3&locations=nat&epiweeks=202001
+https://api.delphi.cmu.edu/epidata/sensors/?names=sar3&locations=nat&epiweeks=202001
 
 ```json
 {
diff --git a/docs/api/twitter.md b/docs/api/twitter.md
index 9c99b52f8..dc2196f47 100644
--- a/docs/api/twitter.md
+++ b/docs/api/twitter.md
@@ -23,7 +23,7 @@ Estimate of influenza activity based on analysis of language used in tweets.
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/twitter/
+The base URL is: https://api.delphi.cmu.edu/epidata/twitter/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -53,7 +53,7 @@ Note:
 # Example URLs
 
 ### Twitter on 2015w01 (national)
-https://delphi.cmu.edu/epidata/twitter/?auth=...&locations=nat&epiweeks=201501
+https://api.delphi.cmu.edu/epidata/twitter/?auth=...&locations=nat&epiweeks=201501
 
 ```json
 {
diff --git a/docs/api/wiki.md b/docs/api/wiki.md
index 5566db9d8..136711f46 100644
--- a/docs/api/wiki.md
+++ b/docs/api/wiki.md
@@ -24,7 +24,7 @@ Number of page visits for selected English, Influenza-related wikipedia articles
 
 # The API
 
-The base URL is: https://delphi.cmu.edu/epidata/wiki/
+The base URL is: https://api.delphi.cmu.edu/epidata/wiki/
 
 See [this documentation](README.md) for details on specifying epiweeks, dates, and lists.
 
@@ -66,7 +66,7 @@ Note:
 # Example URLs
 
 ### Wikipedia Access article "influenza" on 2020w01
-https://delphi.cmu.edu/epidata/wiki/?language=en&articles=influenza&epiweeks=202001
+https://api.delphi.cmu.edu/epidata/wiki/?language=en&articles=influenza&epiweeks=202001
 
 ```json
 {
@@ -86,7 +86,7 @@ https://delphi.cmu.edu/epidata/wiki/?language=en&articles=influenza&epiweeks=202
 ```
 
 ### Wikipedia Access article "influenza" on date 2020-01-01
-https://delphi.cmu.edu/epidata/wiki/?language=en&articles=influenza&dates=20200101
+https://api.delphi.cmu.edu/epidata/wiki/?language=en&articles=influenza&dates=20200101
 
 ```json
 {
diff --git a/docs/new_endpoint_tutorial.md b/docs/new_endpoint_tutorial.md
index d4deed6d4..6e6094161 100644
--- a/docs/new_endpoint_tutorial.md
+++ b/docs/new_endpoint_tutorial.md
@@ -325,7 +325,7 @@ actual
 created in this tutorial.
 
 Once it's approved, merge the PR, and contact an admin to schedule a release. Once released, the API will begin serving your new endpoint. Go ahead and give it a
-try: https://delphi.cmu.edu/epidata/fluview_meta/
+try: https://api.delphi.cmu.edu/epidata/fluview_meta/
 
 ```
 {
diff --git a/scripts/report_missing_covidcast_meta.py b/scripts/report_missing_covidcast_meta.py
index bd1779070..6346541b9 100644
--- a/scripts/report_missing_covidcast_meta.py
+++ b/scripts/report_missing_covidcast_meta.py
@@ -5,7 +5,7 @@
 from pathlib import Path
 
 base_dir = Path(__file__).parent.parent
-base_url = 'https://delphi.cmu.edu/epidata'
+base_url = 'https://api.delphi.cmu.edu/epidata'
 
 def is_known_missing(source: str, signal: str) -> bool:
     if '7dav_cumulative' in signal:
diff --git a/src/client/delphi_epidata.R b/src/client/delphi_epidata.R
index 9566fda50..3396fff27 100644
--- a/src/client/delphi_epidata.R
+++ b/src/client/delphi_epidata.R
@@ -13,7 +13,7 @@ library(httr)
 Epidata <- (function() {
 
   # API base url
-  BASE_URL <- 'https://delphi.cmu.edu/epidata/api.php'
+  BASE_URL <- 'https://api.delphi.cmu.edu/epidata/api.php'
 
   client_version <- '0.4.11'
 
diff --git a/src/client/delphi_epidata.js b/src/client/delphi_epidata.js
index 67240f754..5283cdf36 100644
--- a/src/client/delphi_epidata.js
+++ b/src/client/delphi_epidata.js
@@ -21,7 +21,7 @@
     factory(root, root.fetch, root.jQuery || root.$);
   }
 })(this, function (exports, fetchImpl, jQuery) {
-  const BASE_URL = "https://delphi.cmu.edu/epidata/";
+  const BASE_URL = "https://api.delphi.cmu.edu/epidata/";
   const client_version = "0.4.11";
 
   // Helper function to cast values and/or ranges to strings
diff --git a/src/client/delphi_epidata.py b/src/client/delphi_epidata.py
index 9b3deea94..61b5e41eb 100644
--- a/src/client/delphi_epidata.py
+++ b/src/client/delphi_epidata.py
@@ -33,7 +33,7 @@ class Epidata:
   """An interface to DELPHI's Epidata API."""
 
   # API base url
-  BASE_URL = 'https://delphi.cmu.edu/epidata/api.php'
+  BASE_URL = 'https://api.delphi.cmu.edu/epidata/api.php'
 
   client_version = _version
 
diff --git a/src/client/packaging/npm/tests/__snapshots__/delphi_epidata.spec.js.snap b/src/client/packaging/npm/tests/__snapshots__/delphi_epidata.spec.js.snap
index f0a2aa9f7..b38675130 100644
--- a/src/client/packaging/npm/tests/__snapshots__/delphi_epidata.spec.js.snap
+++ b/src/client/packaging/npm/tests/__snapshots__/delphi_epidata.spec.js.snap
@@ -36,7 +36,7 @@ exports[`fluview basic async 1`] = `
 [MockFunction] {
   "calls": Array [
     Array [
-      "https://delphi.cmu.edu/epidata/fluview/?regions=a&epiweeks=4",
+      "https://api.delphi.cmu.edu/epidata/fluview/?regions=a&epiweeks=4",
     ],
   ],
   "results": Array [
@@ -52,7 +52,7 @@ exports[`fluview basic sync 1`] = `
 [MockFunction] {
   "calls": Array [
     Array [
-      "https://delphi.cmu.edu/epidata/fluview/?regions=a&epiweeks=4",
+      "https://api.delphi.cmu.edu/epidata/fluview/?regions=a&epiweeks=4",
     ],
   ],
   "results": Array [