What is an A record? Name to IPv4
An A record is the phone-book line that says “this hostname lives at this IPv4 address.” If it vanishes, browsers cannot find the site. For the bare domain itself, use the apex / zone apex guide.
Not the zone apex
If you searched “apex domain”, “zone apex”, or “apex record”, that is a different page: what is an apex domain. This guide is only the IPv4 A record (name → address). CNAME on the bare name has its own how-to.
What is an A record?
An A (Address) record is the basic DNS row that points a name at an IPv4 address. www.example.com and example.com can each have their own A records. AAAA is the IPv6 twin. This page is about that address row—not the name of the zone itself.
What CrowWake checks
We resolve A records for the domain you added. No A record → warn. We show the IPv4 addresses we found. The free DNS A checker uses the same lookup with no login. For the product angle—watching the A record so a silent wipe crows early—see the dedicated DNS monitoring guide.
Why it matters
Email auth can look fine while the website itself is dark. An A record changing overnight is a common “who touched DNS?” moment for agencies. If you need the bare-domain vs www distinction, use the apex domain guide; if you pasted a CNAME on the bare name, use the CNAME-at-apex guide.
What “good enough” looks like
The hostname you care about resolves to the expected host or CDN IPv4. If you use ALIAS/ANAME/flattening, CrowWake still expects a resolvable address from the public internet.
If CrowWake crows
Check recent DNS edits, registrar lock, and CDN dashboards. Re-run the free DNS A checker after the fix, then keep watching so the next wipe crows.
Watch this on CrowWake
Add the domain, leave the boxes checked, and the flock will crow when this drifts.
Or try the free DNS A checker with no login.
Deep dive: DNS monitoring — watch the A record so a silent wipe crows early, with the same free DNS A checker.
Related: what is an apex domain and CNAME at apex (separate from this A-record guide).