diff --git a/backend/src/services/certificate-authority/certificate-authority-validators.ts b/backend/src/services/certificate-authority/certificate-authority-validators.ts
index fab62ddbf..3fa7e8d5e 100644
--- a/backend/src/services/certificate-authority/certificate-authority-validators.ts
+++ b/backend/src/services/certificate-authority/certificate-authority-validators.ts
@@ -15,10 +15,15 @@ export const validateAltNameField = z
   .trim()
   .refine(
     (name) => {
-      return isFQDN(name, { allow_wildcard: true }) || z.string().email().safeParse(name).success || isValidIp(name);
+      return (
+        isFQDN(name, { allow_wildcard: true, require_tld: false }) ||
+        z.string().url().safeParse(name).success ||
+        z.string().email().safeParse(name).success ||
+        isValidIp(name)
+      );
     },
     {
-      message: "SAN must be a valid hostname, email address, or IP address"
+      message: "SAN must be a valid hostname, email address, IP address or URL"
     }
   );
 
@@ -39,10 +44,15 @@ export const validateAltNamesField = z
       if (data === "") return true;
       // Split and validate each alt name
       return data.split(", ").every((name) => {
-        return isFQDN(name, { allow_wildcard: true }) || z.string().email().safeParse(name).success || isValidIp(name);
+        return (
+          isFQDN(name, { allow_wildcard: true, require_tld: false }) ||
+          z.string().url().safeParse(name).success ||
+          z.string().email().safeParse(name).success ||
+          isValidIp(name)
+        );
       });
     },
     {
-      message: "Each alt name must be a valid hostname or email address"
+      message: "Each alt name must be a valid hostname, email address, IP address or URL"
     }
   );
diff --git a/backend/src/services/certificate-authority/internal/internal-certificate-authority-fns.ts b/backend/src/services/certificate-authority/internal/internal-certificate-authority-fns.ts
index 80d2842fa..eace4e47a 100644
--- a/backend/src/services/certificate-authority/internal/internal-certificate-authority-fns.ts
+++ b/backend/src/services/certificate-authority/internal/internal-certificate-authority-fns.ts
@@ -152,7 +152,7 @@ export const InternalCertificateAuthorityFns = ({
       extensions.push(extendedKeyUsagesExtension);
     }
 
-    let altNamesArray: { type: "email" | "dns"; value: string }[] = [];
+    let altNamesArray: { type: "email" | "dns" | "ip" | "url"; value: string }[] = [];
 
     if (subscriber.subjectAlternativeNames?.length) {
       altNamesArray = subscriber.subjectAlternativeNames.map((altName) => {
@@ -160,10 +160,18 @@ export const InternalCertificateAuthorityFns = ({
           return { type: "email", value: altName };
         }
 
-        if (isFQDN(altName, { allow_wildcard: true })) {
+        if (isFQDN(altName, { allow_wildcard: true, require_tld: false })) {
           return { type: "dns", value: altName };
         }
 
+        if (z.string().url().safeParse(altName).success) {
+          return { type: "url", value: altName };
+        }
+
+        if (z.string().ip().safeParse(altName).success) {
+          return { type: "ip", value: altName };
+        }
+
         throw new BadRequestError({ message: `Invalid SAN entry: ${altName}` });
       });
 
@@ -418,7 +426,7 @@ export const InternalCertificateAuthorityFns = ({
       );
     }
 
-    let altNamesArray: { type: "email" | "dns"; value: string }[] = [];
+    let altNamesArray: { type: "email" | "dns" | "ip" | "url"; value: string }[] = [];
 
     if (altNames) {
       altNamesArray = altNames.split(",").map((altName) => {
@@ -426,10 +434,18 @@ export const InternalCertificateAuthorityFns = ({
           return { type: "email", value: altName };
         }
 
-        if (isFQDN(altName, { allow_wildcard: true })) {
+        if (isFQDN(altName, { allow_wildcard: true, require_tld: false })) {
           return { type: "dns", value: altName };
         }
 
+        if (z.string().url().safeParse(altName).success) {
+          return { type: "url", value: altName };
+        }
+
+        if (z.string().ip().safeParse(altName).success) {
+          return { type: "ip", value: altName };
+        }
+
         throw new BadRequestError({ message: `Invalid SAN entry: ${altName}` });
       });