Domain Security Info
Verified ASNs
Updated May 1, 2026, 8:34 AM
Managing verified ASNs#
Verified ASNs let you associate autonomous system numbers with brands. When a user looks up an IP address and the WHOIS data includes an ASN that matches a verified entry, the tool can display additional brand context.
What is an ASN?#
An ASN (Autonomous System Number) identifies a network operator on the internet. Every organization that operates its own network โ such as an internet service provider, cloud provider, or large enterprise โ has one or more ASNs.
Examples:
| ASN | Organization |
|---|---|
| AS15169 | |
| AS13335 | Cloudflare |
| AS16509 | Amazon (AWS) |
| AS8075 | Microsoft |
| AS32934 | Facebook (Meta) |
ASNs are used in internet routing to identify which network is responsible for delivering traffic to specific IP address ranges.
Verified ASN fields#
| Field | Required | Description |
|---|---|---|
| ASN | Yes | The ASN identifier string (for example, "AS15169"). Stored in uppercase. |
| ASN number | Yes | The numeric part of the ASN (for example, 15169). |
| Brand | Yes | The brand that operates this ASN. Select from the existing brands list. |
| Description | No | A note about this ASN (for example, "Primary Google network" or "AWS US East"). |
| Additional line 1 | No | Extra context displayed with the brand badge. |
| Additional line 2 | No | Second line of extra context. |
Creating a verified ASN#
- Go to Verified ASNs in the navigation.
- Click Add Verified ASN.
- Enter the ASN identifier (for example,
AS15169). - Enter the numeric ASN number (for example,
15169). - Select a brand from the dropdown.
- Add a description and additional lines (optional).
- Click Save.
Tips#
- Use uppercase for the ASN identifier:
AS15169, notas15169. - Check authoritative sources like PeeringDB, ARIN, or RIPE to verify ASN ownership.
- Large organizations may have multiple ASNs. Create a separate entry for each.
- The description helps other admins understand what the ASN is used for (for example, "Google Cloud" vs. "YouTube CDN").
Editing a verified ASN#
- Go to Verified ASNs in the navigation.
- Find the ASN in the list.
- Click Edit in the Actions column.
- Update the fields you want to change.
- Click Save.
Deleting a verified ASN#
- Go to Verified ASNs in the navigation.
- Find the ASN in the list.
- Click Delete in the Actions column.
- Confirm the deletion.
Searching verified ASNs#
You can search and filter by:
- ASN number or identifier โ Partial matches work.
- Brand โ Filter to show only ASNs for a specific brand.
- Description โ Search within descriptions.
How verified ASNs affect lookups#
When a user looks up an IP address:
- The IP WHOIS data typically includes an ASN for the network.
- The tool checks whether that ASN exists in the verified ASNs database.
- If it does, the associated brand information supplements the WHOIS display.
- This helps identify the organization even when the WHOIS data uses a subsidiary or parent company name that might not be immediately recognizable.