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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,160 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS211665US | HOSTREBEL Hostrebel, Inc. | 256 | 524.3K | 2 |
| AS210305US | FRR-TESTLAB Network Device Education Foundation Inc | 256 | 1 | 2 |
| AS400553US | SUPERCORE - SuperCore LLC | 256 | — | 1 |
| AS401092US | ESUSDNET - El Segundo Unified School District | 256 | — | 1 |
| AS26886US | CLOUDOWNER-01 - cloudowner llc | 256 | 1 | 2 |
| AS395218US | GATESCORP - GATES CORPORATION | 256 | — | 1 |
| AS393470US | BLACKLIST - Mocan Media LLC | 256 | — | 1 |
| AS32403US | THE-HERITAGE-FOUNDATION - The Heritage Foundation | 256 | — | 1 |
| AS20074US | PLNU-ASN - Point Loma Nazarene University | 256 | 16 | 2 |
| AS398234US | HUSCO - HUSCO INTERNATIONAL, INC. | 256 | — | 1 |
| AS396230US | 411-SAW - Lasco | 256 | — | 1 |
| AS11934US | ESL63 - Enom Solutions LLC | 256 | — | 1 |
| AS54828US | SCENTSY01 - SCENTSY | 256 | — | 1 |
| AS395775US | DOTHAN-CITY-01 - CITY OF DOTHAN | 256 | — | 1 |
| AS400473US | AS-JENCO - Jenco Wireless, LLC | 256 | — | 1 |
| AS396448US | 1-MSP-LLC - 1 MSP LLC | 256 | — | 1 |
| AS207098US | APPLAUSEDE Applause App Quality, Inc. | 256 | — | 1 |
| AS62548US | NORWICH-PUBLIC-UTILITIES - City of Norwich Department of Public Utilities | 256 | — | 1 |
| AS46331US | KUKATOLEDO - KUKA Toledo Production Operations LLC | 256 | — | 1 |
| AS40236US | NMTCDBAMATCOTOOLS - Matco Tools | 256 | — | 1 |
| AS40373US | UMC-NET - University Medical Center, Inc | 256 | — | 1 |
| AS14691US | GLAA - Great Lakes Adventist Academy | 256 | 1 | 2 |
| AS14518US | BIMR-LJ - Sanford Burnham Prebys Medical Discovery Institute | 256 | — | 1 |
| AS31980US | BAUPOST - The Baupost Group, LLC | 256 | — | 1 |
| AS393863US | DMA-IND-DC - DMA | 256 | — | 1 |
| AS401036US | FRIENDOWMENT - Friendowment, LLC | 256 | 256 | 2 |
| AS395843US | CHEROKEE-CO-GA-BOC - Cherokee County Board of Commissioners | 256 | — | 1 |
| AS53655US | ACCTL - Advanced Call Center Technologies, LLC | 256 | — | 1 |
| AS402277US | MILLERSE-DTDB-01 - Miller Sports + Entertainment | 256 | — | 1 |
| AS13509US | AS-SNCH-1 - Mount Sinai South Nassau | 256 | — | 1 |
| AS62578US | PFCU-I-DRIVE-32821 - Partners Federal Credit Union | 256 | — | 1 |
| AS12160US | KELLER-AND-HECKMAN-LLP - Keller and Heckman LLP | 256 | — | 1 |
| AS59678US | SYSTEM36 SYSTEM36 LLC | 256 | 67.9K | 8 |
| AS3708US | PACIFIC-BIOSIENCES - Pacific Biosciences of California, Inc. | 256 | — | 1 |
| AS11029US | NETVATA - NetVata, LLC | 256 | 65.5K | 2 |
| AS13685US | ASN-RCSD-01 - Rochester City School District | 256 | 4.1K | 2 |
| AS27154US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS64293US | MHB-AS1 - Mobile Heartbeat | 256 | — | 1 |
| AS136560US | MCDAPASN01-AS-AP - McDonald's Corporation | 256 | — | 1 |
| AS14036US | STACKAV-01 - Stack AV | 256 | — | 1 |
| AS31861US | WTAMU - West Texas A&M University | 256 | — | 1 |
| AS18999US | SAINTANDREWS-1 - SAINT ANDREW'S SCHOOL OF BOCA RATON, INC. | 256 | — | 1 |
| AS394664US | PECKHAM-INC - Peckham, Inc. | 256 | — | 1 |
| AS396945US | MIDWESTLABS - Midwest Laboratories | 256 | — | 1 |
| AS394980US | VAKIFBANK-NY - Turkiye Vakiflar Bankasi T.A.O. | 256 | — | 1 |
| AS13515US | PBA - Palm Beach Atlantic University | 256 | — | 1 |