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Know when the A record movesPoint a Tenium DNS monitor at the A record and get an alert with the old and new addresses.
Start freeWhat an A record is
An A record maps a hostname to an IPv4 address. A domain can have several, and clients pick one. If the record is a CNAME instead, this page shows no A at that name — follow the alias, or use the ALL check.
TTL
The TTL is how many seconds resolvers may cache the answer. A low TTL makes cutovers faster and makes DNS lookups slightly more chatty.
Related checks
AAAA lookup · CNAME lookup · PTR lookup · DNS monitoring
Command-line equivalent
dig +short example.com A More free tools
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