AS13506 United States Department of the Treasury

US-DEPARTMENT-OF-THE-TREASURY - United States Department of the Treasury · registered in the United States

IPv4 addresses132,09627 prefixes · 0.004% of announced IPv4

Rank in United States#476largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#1,502of 79,396 networks with IPv4

IPv6512 x /482 prefixes

CountryUnited States18,679 ASNs registered there

Open AS13506 in ASN lookup Look up an IP in this network (164.95.0.1) All networks in United States

IPv4 prefixes

All 27 prefixes, in address order.

164.95.0.0/18
164.95.64.0/19
164.95.96.0/19
164.95.128.0/18
164.95.192.0/21
164.95.200.0/22
164.95.204.0/24
164.95.205.0/24
164.95.206.0/23
164.95.208.0/20
164.95.224.0/19
166.123.0.0/17
166.123.128.0/18
166.123.192.0/21
166.123.200.0/22
166.123.204.0/24
166.123.205.0/24
166.123.206.0/23
166.123.208.0/24
166.123.209.0/24
166.123.210.0/23
166.123.212.0/22
166.123.216.0/21
166.123.224.0/19
199.169.192.0/23
199.169.197.0/24
199.169.199.0/24

IPv6 prefixes

All 2 prefixes.

2610:108:3100::/40
2610:108:4100::/40

Similar-sized networks in United States

ASNNameIPv4 addresses

AS131#473 UCSB-NET-AS - University of California, Santa Barbara132,100

AS7859#474 PAIR-NETWORKS - pair Networks132,096

AS54489#475 CORESPACE-DAL - CoreSpace, Inc.132,096

AS6356#477 NERDCNET - University of Florida132,096

AS1556#478 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD)132,096

AS31#479 CIT - California Institute of Technology131,844

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