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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 512 |
| — |
| 2 |
| AS401606US | CDOT-ITS-01 - Colorado Department of Transportation | 512 | — | 2 |
| AS11248US | MSTS-NET - TreviPay | 512 | — | 2 |
| AS46460US | KARMAK-NET - Karmak, Inc. | 512 | — | 1 |
| AS399894US | TAYLORED-FMI - Taylored Services, LLC | 512 | — | 2 |
| AS396160US | ROYAL-REALITY-CORP - Royal Realty Corp. | 512 | — | 2 |
| AS20373US | MARLEYINDEX-US - Marley Index, LLC | 512 | 3 | 5 |
| AS22666US | GBHSD - Glenbrook High School District | 512 | — | 1 |
| AS26649US | GDCLSD-AS - General Dynamics Land Systems | 512 | — | 2 |
| AS26414US | AS-DNS4 - Unicycle, LLC | 512 | 4 | 4 |
| AS396041US | HFC-ASN - HollyFrontier Corporation | 512 | — | 2 |
| AS20388US | ETI-FLL1 - Ewart Technologies, Inc. | 512 | — | 2 |
| AS32830US | CCS-325-1 - Connecticut Computer Service, Inc. | 512 | — | 2 |
| AS36010US | RBSTARNET1 - Randolph-Brooks Federal Credit Union | 512 | — | 2 |
| AS400025US | LCISD - Lapeer ISD | 512 | — | 2 |
| AS401493US | SUREPATH-AI - SurePath AI | 512 | — | 2 |
| AS395943US | MHAGBGP - Memorial Hospital at Gulfport | 512 | — | 2 |
| AS394011US | NEORA-ASN-1 - Neora, LLC | 512 | — | 1 |
| AS12096US | AMPNET-ASN - AMP Telephones | 512 | — | 2 |
| AS401183US | STEGEMEYER-NET - James Stegemeyer, Sole Proprietorship | 512 | 16 | 3 |
| AS54496US | JFBC-AS - Johnson Ferry Baptist Church, Inc. | 512 | 2 | 4 |
| AS63166US | TGNA-WHAS - TEGNA Inc. | 512 | — | 2 |
| AS394889US | RNDC-12-AS - REPUBLIC NATIONAL DISTRIBUTING COMPANY | 512 | — | 2 |
| AS14076US | AS14076 - Secure Network USA, LLC | 512 | — | 2 |
| AS394770US | AXIGENT-TECHNOLOGIES-GROUP - Axigent Technologies Group, Inc. | 512 | 65.5K | 3 |
| AS62517US | TAIWAN-TELECOM - Taiwan Telecom | 512 | 1 | 3 |
| AS399525US | RIMROCK-WIRELESS - Rimrock Wireless | 512 | 4.1K | 3 |
| AS46639US | HUGHES-TELEMATICS - Verizon Business | 512 | — | 2 |
| AS32306US | FALCK-MOBILE-HEALTH-CORP - Falck USA, Inc. | 512 | — | 2 |
| AS400918US | TWOROCKLAN - Two Rock LAN | 512 | — | 2 |
| AS402213US | BUFFALO BILLS STADIUM - Bills stadium and events company llc | 512 | — | 2 |
| AS36638US | JRCH-AS - Jackson Rancheria Band of Miwuk Indians | 512 | — | 2 |
| AS53546US | LEGION - Legion, Inc. | 512 | — | 1 |
| AS40887US | TGNA-WZZM - TEGNA Inc. | 512 | — | 2 |
| AS46895US | CSGN - CSG Systems Inc. | 512 | — | 2 |
| AS32833US | SMP-1801 - Standard Motor Products, Inc | 512 | — | 2 |
| AS33161US | CHUMASH-ENTERPRISES - Chumash Casino Resort | 512 | — | 2 |
| AS994US | AS-VIIRTUE - Viirtue LLC | 512 | — | 2 |
| AS33461US | COMMUNITY-FOUNDATION-OF-NORTHWEST-INDIANA - COMMUNITY FOUNDATION OF NW INDIANA | 512 | — | 2 |
| AS397259US | PIRATEL-LA1 - Piratel LLC | 512 | — | 2 |
| AS401365US | SMF-ASN-01 - Saia Motor Freight Line, LLC | 512 | — | 2 |
| AS19126US | KIZAWIRELESS - KIZA | 512 | — | 2 |
| AS400701US | NCCB-COOP - National Broadband Coop | 512 | 4.1K | 2 |
| AS35864US | APUS-5 - American Public University System | 512 | — | 2 |
| AS40735US | HAIB - HudsonAlpha Institute for Biotechnology | 512 | — | 2 |
| AS401475US | CIGIE-ASN1 - CIGIE | 512 | 2 | 4 |
| AS397116US | WMLPNET-AS-01 - Wellesley Municipal Light Plant | 512 | — | 1 |