Domain Security Info
Unknown Records
Updated May 1, 2026, 8:32 AM
Unknown records viewer#
The unknown records viewer shows DNS records that did not match any tag or regex pattern during a domain lookup. Use it to discover new services that you should add to the tag database.
What are unknown records?#
Every time someone looks up a domain, the tool checks each DNS record against the tag database and regex patterns. If a record does not match anything, the system saves it as an "unknown" record. These are real DNS records โ the system just does not know what service they belong to yet.
Unknown records build up over time as people use the tool. Reviewing them regularly helps you keep the tag database up to date.
Viewing unknown records#
- Go to Unknown Records under Manage Data in the navigation.
- You'll see a list of unrecognized DNS records.
Filtering options#
| Filter | What it does |
|---|---|
| Record type | Show only TXT, MX, or NS records. |
| Status | Filter by new (not yet reviewed), reviewed (looked at but not acted on), or archived (dismissed). |
The viewer shows up to 100 records at a time.
What to do with unknown records#
When you find an unknown record:
- Identify the service. Look at the record content to determine what service it belongs to. Search the web for distinctive parts of the record if needed.
- Create a tag or regex pattern. If the record belongs to a known service, add a TXT tag, MX tag, NS tag, or regex pattern to identify it in future lookups.
- Mark as reviewed. If you've looked at the record but don't need to add a tag for it, mark it as reviewed.
- Archive. If the record is not useful to track, archive it to remove it from the default view.
Common sources of unknown records#
- New services that haven't been added to the tag database yet.
- Custom or internal records that are specific to a single organization.
- Uncommon verification tokens from niche platforms.
- Legacy records that are no longer associated with an active service.
Tips#
- Review unknown records regularly (weekly or monthly) to keep the tag database current.
- Look for patterns among unknown records. If you see the same prefix appearing across multiple domains, it's a good candidate for a new TXT tag.
- Rare or one-off records can usually be archived without adding a tag.