AS3627 National Radio Astronomy Observatory

NRAO-AS - National Radio Astronomy Observatory · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#13,678largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#63,014of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS3627 in ASN lookup Look up an IP in this network (206.197.219.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

206.197.219.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS3472#13675 DNIC-AS-03472 - United States Department of Defense (DoD)256

AS3515#13676 DSI-WR - RTX BBN Technologies, Inc.256

AS3620#13677 MCIASN-BLK - Verizon Business256

AS3660#13679 BPC-ASN - Berry Global Inc256

AS3708#13680 PACIFIC-BIOSIENCES - Pacific Biosciences of California, Inc.256

AS3728#13681 ONR-ASN - LightEdge Solutions256

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources