IT & systems administrators

DNS Lookup for IT Admins

When email stops flowing or a service goes unreachable, IT admins reach for DNS first. A missing MX record, an expired SPF entry, or a stale A record explains a huge share of incidents. Being able to inspect a domain's records quickly — without SSHing into a box or installing dig — shortens the path from alert to fix.

This workflow helps admins look up DNS records to troubleshoot mail delivery, verify configuration after a change, and confirm propagation, plus check related signals like redirects and domain age.

The workflow

  1. 1

    Look up the records

    Query A, MX, TXT, and other records for the domain to see current configuration.

  2. 2

    Troubleshoot mail flow

    Check MX and TXT (SPF/DKIM) records when mail bounces or lands in spam.

  3. 3

    Verify after changes

    Confirm a record change resolves correctly before closing the ticket.

  4. 4

    Check related signals

    Trace redirects and review domain age to rule out expiry or misrouting.

Recommended tools

Pro tips

  • Check MX and SPF/TXT records first when diagnosing mail delivery issues.
  • Remember TTLs — changes take time to propagate, so re-check after the record's TTL elapses.
  • Document the expected record set for critical domains so drift is obvious at a glance.

Frequently asked questions