United States

AS49

National Institute of Standards and Technology Unknown registered in United States

23IPv4 prefixes
7IPv6 prefixes
100%RPKI-valid
#12,721AS Rank
327/327RIS visibility
#1,172Rank in United States
1985-09-04Allocated

National Institute of Standards and Technology (AS49) — Unknown, registered in United States. announces 23 IPv4 prefixes + 7 IPv6 prefixes. Rank in United States: #1172. Allocated: 1985-09-04.

Announced prefixes · 30

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 23 IPv4 · 7 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

0 10 20 30 2026-06-12 2026-06-14
Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)
Data table
DayAnnounced prefixes
2026-06-1230
2026-06-1330
2026-06-1430

AS topology · Customer cone 1

Providers · 3

  • AS3356 Level 3 Parent, LLC
  • AS13335 Cloudflare, Inc.
  • AS3477 National Oceanic and Atmospheric Administration
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