A dated trail, not a snapshot
Most tools show DNS as it is right now. DNSTimeMachine shows the sequence: what the record was, what it became, and the day it turned over.
DNS change history
Find out when a DNS record actually changed.
When something breaks, the first question is when it changed. DNS gives you no answer, the old value is simply gone. DNSTimeMachine keeps the receipts: a dated trail of every record change on a domain, so you can line the outage up against the exact moment a record flipped.
For anyone searching DNS change history, when did DNS change, DNS record change date, or DNS history timeline.
How the history reads.
One domain, every record, each value stamped with the day it first appeared. That is the whole product: the past DNS you cannot get from a live lookup.
Tie a break to a change
Line up the date an incident started against the date a record flipped. When they match, you have stopped guessing.
Records that should not have moved
A removed SPF include or a repointed CNAME is obvious in hindsight. The history makes it obvious before the incident review.
When teams reach for this.
- An incident started and nobody admits to a change
- Email authentication broke without warning
- A certificate stopped validating overnight
- Traffic started landing on the wrong host
"What did this point to before?"
The question current lookups cannot answer. Enter a domain above and we will keep its history for you.
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