diff --git a/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json b/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
index 878216a86da..e34bdc9f808 100644
--- a/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
+++ b/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
@@ -11245,6 +11245,7 @@
           "ap-southeast-2" : { },
           "ap-southeast-3" : { },
           "ap-southeast-4" : { },
+          "ap-southeast-5" : { },
           "ca-central-1" : { },
           "ca-west-1" : { },
           "eu-central-1" : { },
@@ -21622,96 +21623,192 @@
             "variants" : [ {
               "hostname" : "snowball-fips.af-south-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.af-south-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.af-south-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ap-east-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ap-east-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ap-east-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ap-east-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ap-northeast-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ap-northeast-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ap-northeast-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ap-northeast-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ap-northeast-2" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ap-northeast-2.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ap-northeast-2.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ap-northeast-2.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ap-northeast-3" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ap-northeast-3.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ap-northeast-3.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ap-northeast-3.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ap-south-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ap-south-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ap-south-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ap-south-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ap-southeast-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ap-southeast-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ap-southeast-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ap-southeast-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ap-southeast-2" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ap-southeast-2.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ap-southeast-2.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ap-southeast-2.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ap-southeast-3" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ap-southeast-3.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ap-southeast-3.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ap-southeast-3.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "ca-central-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.ca-central-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.ca-central-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.ca-central-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "eu-central-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.eu-central-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.eu-central-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.eu-central-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "eu-north-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.eu-north-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.eu-north-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.eu-north-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "eu-south-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.eu-south-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.eu-south-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.eu-south-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "eu-west-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.eu-west-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.eu-west-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.eu-west-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "eu-west-2" : {
             "variants" : [ {
               "hostname" : "snowball-fips.eu-west-2.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.eu-west-2.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.eu-west-2.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "eu-west-3" : {
             "variants" : [ {
               "hostname" : "snowball-fips.eu-west-3.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.eu-west-3.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.eu-west-3.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "fips-af-south-1" : {
@@ -21879,42 +21976,84 @@
             "variants" : [ {
               "hostname" : "snowball-fips.il-central-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.il-central-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.il-central-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "me-central-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.me-central-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.me-central-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.me-central-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "sa-east-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.sa-east-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.sa-east-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.sa-east-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "us-east-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.us-east-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.us-east-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.us-east-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "us-east-2" : {
             "variants" : [ {
               "hostname" : "snowball-fips.us-east-2.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.us-east-2.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.us-east-2.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "us-west-1" : {
             "variants" : [ {
               "hostname" : "snowball-fips.us-west-1.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.us-west-1.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.us-west-1.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           },
           "us-west-2" : {
             "variants" : [ {
               "hostname" : "snowball-fips.us-west-2.amazonaws.com",
               "tags" : [ "fips" ]
+            }, {
+              "hostname" : "snowball-fips.us-west-2.api.aws",
+              "tags" : [ "dualstack", "fips" ]
+            }, {
+              "hostname" : "snowball.us-west-2.api.aws",
+              "tags" : [ "dualstack" ]
             } ]
           }
         }