diff --git a/infrastructure/server/oidc_clients_fom.tf b/infrastructure/server/oidc_clients_fom.tf
index 34c2f3859..4b17ac19b 100644
--- a/infrastructure/server/oidc_clients_fom.tf
+++ b/infrastructure/server/oidc_clients_fom.tf
@@ -3,13 +3,13 @@ resource "aws_cognito_user_pool_client" "dev_fom_oidc_client" {
   allowed_oauth_flows                           = ["code"]
   allowed_oauth_flows_user_pool_client          = "true"
   allowed_oauth_scopes                          = ["openid", "profile", "email"]
-  callback_urls                                 = [
+  callback_urls                                 = concat([
     "https://oidcdebugggersecure-c6af30-dev.apps.gold.devops.gov.bc.ca/",
     "http://localhost:4200/admin/search"
-  ]
-  logout_urls                                   = [
+  ], [for i in range("${var.dev_pr_url_count}") : "https://fom-${i}.apps.silver.devops.gov.bc.ca/admin/search"])
+  logout_urls                                   = concat([
     "${var.cognito_app_client_logout_chain_url.dev}http://localhost:4200/admin/not-authorized?loggedout=true"
-  ]
+  ], [for i in range("${var.dev_pr_url_count}") : "${var.cognito_app_client_logout_chain_url.dev}https://fom-${i}.apps.silver.devops.gov.bc.ca/admin/not-authorized?loggedout=true"])
   enable_propagate_additional_user_context_data = "false"
   enable_token_revocation                       = "true"
   explicit_auth_flows                           = ["ALLOW_REFRESH_TOKEN_AUTH"]
diff --git a/infrastructure/server/oidc_clients_forest_client.tf b/infrastructure/server/oidc_clients_forest_client.tf
index 63e52ec11..9778d6e20 100644
--- a/infrastructure/server/oidc_clients_forest_client.tf
+++ b/infrastructure/server/oidc_clients_forest_client.tf
@@ -3,13 +3,13 @@ resource "aws_cognito_user_pool_client" "dev_forest_client_oidc_client" {
   allowed_oauth_flows                  = ["code"]
   allowed_oauth_flows_user_pool_client = "true"
   allowed_oauth_scopes                 = ["openid", "profile", "email"]
-  callback_urls = [
+  callback_urls = concat([
     "https://oidcdebugggersecure-c6af30-dev.apps.gold.devops.gov.bc.ca/",
     "http://localhost:3000/dashboard",
-  ]
-  logout_urls = [
+  ], [for i in range("${var.dev_pr_url_count}") : "https://nr-forest-client-${i}-frontend.apps.silver.devops.gov.bc.ca/dashboard"])
+  logout_urls = concat([
     "${var.cognito_app_client_logout_chain_url.dev}http://localhost:3000/"
-  ]
+  ], [for i in range("${var.dev_pr_url_count}") : "${var.cognito_app_client_logout_chain_url.dev}https://nr-forest-client-${i}-frontend.apps.silver.devops.gov.bc.ca/"])
   enable_propagate_additional_user_context_data = "false"
   enable_token_revocation                       = "true"
   explicit_auth_flows                           = ["ALLOW_REFRESH_TOKEN_AUTH"]
diff --git a/infrastructure/server/oidc_clients_silva.tf b/infrastructure/server/oidc_clients_silva.tf
index 6c4c5fed2..f8c32e280 100644
--- a/infrastructure/server/oidc_clients_silva.tf
+++ b/infrastructure/server/oidc_clients_silva.tf
@@ -3,16 +3,16 @@ resource "aws_cognito_user_pool_client" "dev_silva_oidc_client" {
   allowed_oauth_flows                           = ["code"]
   allowed_oauth_flows_user_pool_client          = "true"
   allowed_oauth_scopes                          = ["openid", "profile", "email"]
-  callback_urls                                 = [
+  callback_urls                                 = concat([
     "https://oidcdebugggersecure-c6af30-dev.apps.gold.devops.gov.bc.ca/",
     "http://localhost:3000/dashboard",
     "https://nr-results-exam-test-frontend.apps.silver.devops.gov.bc.ca/dashboard"
-  ]
-  logout_urls                                   = [
+  ], [for i in range("${var.dev_pr_url_count}") : "https://nr-silva-${i}-frontend.apps.silver.devops.gov.bc.ca/dashboard"])
+  logout_urls                                   = concat([
     "${var.cognito_app_client_logout_chain_url.dev}https://oidcdebugggersecure-c6af30-dev.apps.gold.devops.gov.bc.ca/",
     "${var.cognito_app_client_logout_chain_url.dev}http://localhost:3000/",
     "${var.cognito_app_client_logout_chain_url.dev}https://nr-results-exam-test-frontend.apps.silver.devops.gov.bc.ca/"
-  ]
+  ], [for i in range("${var.dev_pr_url_count}") : "${var.cognito_app_client_logout_chain_url.dev}https://nr-silva-${i}-frontend.apps.silver.devops.gov.bc.ca/"])
   enable_propagate_additional_user_context_data = "false"
   enable_token_revocation                       = "true"
   explicit_auth_flows                           = ["ALLOW_REFRESH_TOKEN_AUTH"]
diff --git a/infrastructure/server/oidc_clients_spar.tf b/infrastructure/server/oidc_clients_spar.tf
index d710dd4ac..f09ce5ab3 100644
--- a/infrastructure/server/oidc_clients_spar.tf
+++ b/infrastructure/server/oidc_clients_spar.tf
@@ -3,15 +3,15 @@ resource "aws_cognito_user_pool_client" "dev_spar_oidc_client" {
   allowed_oauth_flows                           = ["code"]
   allowed_oauth_flows_user_pool_client          = "true"
   allowed_oauth_scopes                          = ["openid", "profile", "email"]
-  callback_urls                                 = [
+  callback_urls                                 = concat([
     "https://oidcdebugggersecure-c6af30-dev.apps.gold.devops.gov.bc.ca/",
     "http://localhost:3000/",
     "http://localhost:3000/silent-check-sso"
-  ]
-  logout_urls                                   = [
+  ], [for i in range("${var.dev_pr_url_count}") : "https://nr-spar-${i}-frontend.apps.silver.devops.gov.bc.ca/"])
+  logout_urls                                   = concat([
     "${var.cognito_app_client_logout_chain_url.dev}https://oidcdebugggersecure-c6af30-dev.apps.gold.devops.gov.bc.ca/",
     "${var.cognito_app_client_logout_chain_url.dev}http://localhost:3000/"
-  ]
+  ], [for i in range("${var.dev_pr_url_count}") : "${var.cognito_app_client_logout_chain_url.dev}https://nr-spar-${i}-frontend.apps.silver.devops.gov.bc.ca/"])
   enable_propagate_additional_user_context_data = "false"
   enable_token_revocation                       = "true"
   explicit_auth_flows                           = ["ALLOW_REFRESH_TOKEN_AUTH"]
@@ -43,10 +43,10 @@ resource "aws_cognito_user_pool_client" "test_spar_oidc_client" {
   callback_urls                                 = [
     "http://localhost:3000/",
     "https://oidcdebugggersecure-c6af30-dev.apps.gold.devops.gov.bc.ca/",
-    "https://nr-spar-webapp-test-frontend.apps.silver.devops.gov.bc.ca/"
+    "https://nr-spar-test-frontend.apps.silver.devops.gov.bc.ca/"
   ]
   logout_urls                                   = [
-    "${var.cognito_app_client_logout_chain_url.test}https://nr-spar-webapp-test-frontend.apps.silver.devops.gov.bc.ca/",
+    "${var.cognito_app_client_logout_chain_url.test}https://nr-spar-test-frontend.apps.silver.devops.gov.bc.ca/",
     "${var.cognito_app_client_logout_chain_url.test}http://localhost:3000/"
   ]
   enable_propagate_additional_user_context_data = "false"
@@ -78,10 +78,10 @@ resource "aws_cognito_user_pool_client" "prod_spar_oidc_client" {
   allowed_oauth_flows_user_pool_client          = "true"
   allowed_oauth_scopes                          = ["openid", "profile", "email"]
   callback_urls                                 = [
-    "https://nr-spar-webapp-prod-frontend.apps.silver.devops.gov.bc.ca/"
+    "https://nr-spar-prod-frontend.apps.silver.devops.gov.bc.ca/"
   ]
   logout_urls                                   = [
-    "${var.cognito_app_client_logout_chain_url.prod}https://nr-spar-webapp-prod-frontend.apps.silver.devops.gov.bc.ca/"
+    "${var.cognito_app_client_logout_chain_url.prod}https://nr-spar-prod-frontend.apps.silver.devops.gov.bc.ca/"
   ]
   enable_propagate_additional_user_context_data = "false"
   enable_token_revocation                       = "true"
diff --git a/infrastructure/server/variables_provided.tf b/infrastructure/server/variables_provided.tf
index f270686f8..28ff694da 100644
--- a/infrastructure/server/variables_provided.tf
+++ b/infrastructure/server/variables_provided.tf
@@ -334,4 +334,10 @@ variable "prod_override_bcsc_userinfo_proxy_endpoint" {
   description = "Endpoint for Cognito to get userinfo data for BCSC PROD environment"
   type = string
   default = "not used unless overridden in terragrunt"
+}
+
+variable "dev_pr_url_count" {
+  description = "Number of pull request redirect urls of Cognito dev clients"
+  type = number
+  default = 50
 }
\ No newline at end of file