tf.nist.gov
Time and Frequency Division | NIST
The Time and Frequency Division maintains the standard for frequency and time interval for the United States, provides official time to the United States, and carries out a broad program of research and service activities in time and frequency metrology.
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2026-05-15 |
| Last crawled | 2026-06-14 |
| IPv4 | 172.65.90.25 |
| IPv6 | 2606:4700:78::90:0:180 |
| Network | AS13335 Cloudflare, Inc. · California |
| CNAME | tf.nist.gov |
| Language | en |
| Server | cloudflare |