diff --git a/README.md b/README.md
index 65b83e71..793df06a 100644
--- a/README.md
+++ b/README.md
@@ -354,6 +354,7 @@ You don't have to do anything manually!
 1. Nexcess API (https://www.nexcess.net)
 1. Thermo.io API (https://www.thermo.io)
 1. Futurehosting API (https://www.futurehosting.com)
+1. Rackspace Cloud DNS (https://www.rackspace.com)
 
 And:
 
diff --git a/dnsapi/README.md b/dnsapi/README.md
index a9b78ef8..c136ed35 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -1228,6 +1228,21 @@ acme.sh --issue --dns dns_nw -d example.com --dnssleep 900
 
 The `NW_API_TOKEN` and `NW_API_ENDPOINT` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
 
+## 64. Use Rackspace API
+
+Set username and API key, which is available under "My Profile & Settings"
+
+```
+export RACKSPACE_Username='username'
+export RACKSPACE_Apikey='xxx'
+```
+
+Now, let's issue a cert:
+
+```
+acme.sh --issue --dns dns_rackspace -d example.com -d www.example.com
+```
+
 # Use custom API
 
 If your API is not supported yet, you can write your own DNS API.
diff --git a/dnsapi/dns_rackspace.sh b/dnsapi/dns_rackspace.sh
new file mode 100644
index 00000000..3939fd81
--- /dev/null
+++ b/dnsapi/dns_rackspace.sh
@@ -0,0 +1,207 @@
+#!/usr/bin/env sh
+#
+#
+#RACKSPACE_Username=""
+#
+#RACKSPACE_Apikey=""
+
+RACKSPACE_Endpoint="https://dns.api.rackspacecloud.com/v1.0"
+
+# 20190213 - The name & id fields swapped in the API response; fix sed
+# 20190101 - Duplicating file for new pull request to dev branch
+# Original - tcocca:rackspace_dnsapi https://github.com/Neilpang/acme.sh/pull/1297
+
+########  Public functions #####################
+#Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_rackspace_add() {
+  fulldomain="$1"
+  _debug fulldomain="$fulldomain"
+  txtvalue="$2"
+  _debug txtvalue="$txtvalue"
+  _rackspace_check_auth || return 1
+  _rackspace_check_rootzone || return 1
+  _info "Creating TXT record."
+  if ! _rackspace_rest POST "$RACKSPACE_Tenant/domains/$_domain_id/records" "{\"records\":[{\"name\":\"$fulldomain\",\"type\":\"TXT\",\"data\":\"$txtvalue\",\"ttl\":300}]}"; then
+    return 1
+  fi
+  _debug2 response "$response"
+  if ! _contains "$response" "$txtvalue" >/dev/null; then
+    _err "Could not add TXT record."
+    return 1
+  fi
+  return 0
+}
+
+#fulldomain txtvalue
+dns_rackspace_rm() {
+  fulldomain=$1
+  _debug fulldomain="$fulldomain"
+  txtvalue=$2
+  _debug txtvalue="$txtvalue"
+  _rackspace_check_auth || return 1
+  _rackspace_check_rootzone || return 1
+  _info "Checking for TXT record."
+  if ! _get_recordid "$_domain_id" "$fulldomain" "$txtvalue"; then
+    _err "Could not get TXT record id."
+    return 1
+  fi
+  if [ "$_dns_record_id" = "" ]; then
+    _err "TXT record not found."
+    return 1
+  fi
+  _info "Removing TXT record."
+  if ! _delete_txt_record "$_domain_id" "$_dns_record_id"; then
+    _err "Could not remove TXT record $_dns_record_id."
+  fi
+  return 0
+}
+
+####################  Private functions below ##################################
+#_acme-challenge.www.domain.com
+#returns
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+# _domain_id=sdjkglgdfewsdfg
+_get_root_zone() {
+  domain="$1"
+  i=2
+  p=1
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+    _debug h "$h"
+    if [ -z "$h" ]; then
+      #not valid
+      return 1
+    fi
+    if ! _rackspace_rest GET "$RACKSPACE_Tenant/domains"; then
+      return 1
+    fi
+    _debug2 response "$response"
+    if _contains "$response" "\"name\":\"$h\"" >/dev/null; then
+      # Response looks like:
+      #   {"ttl":300,"accountId":12345,"id":1111111,"name":"example.com","emailAddress": ...<and so on>
+      _domain_id=$(echo "$response" | sed -n "s/^.*\"id\":\([^,]*\),\"name\":\"$h\",.*/\1/p")
+      _debug2 domain_id "$_domain_id"
+      if [ -n "$_domain_id" ]; then
+        _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+        _domain=$h
+        return 0
+      fi
+      return 1
+    fi
+    p=$i
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}
+
+_get_recordid() {
+  domainid="$1"
+  fulldomain="$2"
+  txtvalue="$3"
+  if ! _rackspace_rest GET "$RACKSPACE_Tenant/domains/$domainid/records?name=$fulldomain&type=TXT"; then
+    return 1
+  fi
+  _debug response "$response"
+  if ! _contains "$response" "$txtvalue"; then
+    _dns_record_id=0
+    return 0
+  fi
+  _dns_record_id=$(echo "$response" | tr '{' "\n" | grep "\"data\":\"$txtvalue\"" | sed -n 's/^.*"id":"\([^"]*\)".*/\1/p')
+  _debug _dns_record_id "$_dns_record_id"
+  return 0
+}
+
+_delete_txt_record() {
+  domainid="$1"
+  _dns_record_id="$2"
+  if ! _rackspace_rest DELETE "$RACKSPACE_Tenant/domains/$domainid/records?id=$_dns_record_id"; then
+    return 1
+  fi
+  _debug response "$response"
+  if ! _contains "$response" "RUNNING"; then
+    return 1
+  fi
+  return 0
+}
+
+_rackspace_rest() {
+  m="$1"
+  ep="$2"
+  data="$3"
+  _debug ep "$ep"
+  export _H1="Accept: application/json"
+  export _H2="X-Auth-Token: $RACKSPACE_Token"
+  export _H3="X-Project-Id: $RACKSPACE_Tenant"
+  export _H4="Content-Type: application/json"
+  if [ "$m" != "GET" ]; then
+    _debug data "$data"
+    response="$(_post "$data" "$RACKSPACE_Endpoint/$ep" "" "$m")"
+    retcode=$?
+  else
+    _info "Getting $RACKSPACE_Endpoint/$ep"
+    response="$(_get "$RACKSPACE_Endpoint/$ep")"
+    retcode=$?
+  fi
+
+  if [ "$retcode" != "0" ]; then
+    _err "error $ep"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}
+
+_rackspace_authorization() {
+  export _H1="Content-Type: application/json"
+  data="{\"auth\":{\"RAX-KSKEY:apiKeyCredentials\":{\"username\":\"$RACKSPACE_Username\",\"apiKey\":\"$RACKSPACE_Apikey\"}}}"
+  _debug data "$data"
+  response="$(_post "$data" "https://identity.api.rackspacecloud.com/v2.0/tokens" "" "POST")"
+  retcode=$?
+  _debug2 response "$response"
+  if [ "$retcode" != "0" ]; then
+    _err "Authentication failed."
+    return 1
+  fi
+  if _contains "$response" "token"; then
+    RACKSPACE_Token="$(echo "$response" | _normalizeJson | sed -n 's/^.*"token":{.*,"id":"\([^"]*\)",".*/\1/p')"
+    RACKSPACE_Tenant="$(echo "$response" | _normalizeJson | sed -n 's/^.*"token":{.*,"id":"\([^"]*\)"}.*/\1/p')"
+    _debug RACKSPACE_Token "$RACKSPACE_Token"
+    _debug RACKSPACE_Tenant "$RACKSPACE_Tenant"
+  fi
+  return 0
+}
+
+_rackspace_check_auth() {
+  # retrieve the rackspace creds
+  RACKSPACE_Username="${RACKSPACE_Username:-$(_readaccountconf_mutable RACKSPACE_Username)}"
+  RACKSPACE_Apikey="${RACKSPACE_Apikey:-$(_readaccountconf_mutable RACKSPACE_Apikey)}"
+  # check their vals for null
+  if [ -z "$RACKSPACE_Username" ] || [ -z "$RACKSPACE_Apikey" ]; then
+    RACKSPACE_Username=""
+    RACKSPACE_Apikey=""
+    _err "You didn't specify a Rackspace username and api key."
+    _err "Please set those values and try again."
+    return 1
+  fi
+  # save the username and api key to the account conf file.
+  _saveaccountconf_mutable RACKSPACE_Username "$RACKSPACE_Username"
+  _saveaccountconf_mutable RACKSPACE_Apikey "$RACKSPACE_Apikey"
+  if [ -z "$RACKSPACE_Token" ]; then
+    _info "Getting authorization token."
+    if ! _rackspace_authorization; then
+      _err "Can not get token."
+    fi
+  fi
+}
+
+_rackspace_check_rootzone() {
+  _debug "First detect the root zone"
+  if ! _get_root_zone "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+}