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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| 4.1K |
| 2 |
| AS402542US | CLOUDFLARENET - Cloudflare, | 256 | 1 | 2 |
| AS22396US | LANVERA - Lanvera Ltd | 256 | — | 1 |
| AS13396US | LBWL-ASN - LANSING BOARD OF WATER AND LIGHT | 256 | — | 1 |
| AS36634US | GREATRIVERHEALTHSYSTEMS - Great River Health Systems, Inc. | 256 | — | 1 |
| AS1037US | RBDC-AS-1 - RBDC, Inc. | 256 | — | 1 |
| AS400729US | AS-BWLOG - Bandwidth Logic, Inc. | 256 | — | 1 |
| AS21941US | SYNCSORT-INC - Precisely Software Incorporated | 256 | — | 1 |
| AS32942US | SCMASN - Sandler Capital Management | 256 | — | 1 |
| AS22825US | RCLS-INTERNET - Ramapo Catskill Library System | 256 | — | 1 |
| AS400366US | FS846-ASN-01 - Freestyle Services LLC | 256 | — | 1 |
| AS402691US | SEL01 - Solar | 256 | 4.1K | 3 |
| AS36199US | IILL-2-36199 - Cree Lighting a company of IDEAL INDUSTRIES, INC | 256 | — | 1 |
| AS393554US | KELLERAMERICAS - Keller Foundations, LLC | 256 | — | 1 |
| AS19946US | LAND-HOLDINGS-I - Scarlet Pearl Casino | 256 | — | 1 |
| AS63432US | PSRFA-ANS - Puget Sound Regional Fire Authority | 256 | — | 1 |
| AS399913US | BMDC-01 - Advanced Logic Industries, Inc | 256 | — | 1 |
| AS400890US | AMTECH-BUSINESS - AMTECH BUSINESS SOLUTIONS. | 256 | — | 1 |
| AS400640US | BREEEZAIR-NETWORKS - BreezeAir Networks LLC | 256 | — | 1 |
| AS4893US | RGM-ASN-1 - DRW Holdings, LLC | 256 | — | 1 |
| AS26359US | CARDINAL-COMMERCE-8100 - Cardinal Commerce Corporation | 256 | — | 1 |
| AS399919US | AS-ALOMERE-HEALTH - Alomere Health | 256 | — | 1 |
| AS3470US | DNIC-AS-03470 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS17344US | ENGLEW-AS17344 - Englewood Hospital and Medical Center | 256 | — | 1 |
| AS394331US | NSX - NDIT Solutions | 256 | — | 1 |
| AS1609US | GISX - Global Imaging Systems Inc | 256 | — | 1 |
| AS400315US | COLD-HEADING - Cold Heading Company | 256 | — | 1 |
| AS54414US | RESPEC - Respec Inc | 256 | — | 1 |
| AS5545US | SERVEREL-AS Serverel Inc. | 256 | — | 1 |
| AS401613US | FSHAC - Four Seasons Heating & Air Conditioning, LLC | 256 | — | 1 |
| AS397448US | DBSL-WQG-01 - DH Business Services LLC | 256 | — | 1 |
| AS26526US | ENVESTNETPMC - ENV | 256 | — | 1 |
| AS399053US | ENTHQ-01 - Ent Credit Union | 256 | — | 1 |
| AS62503US | NPGCO-KRDO - News-Press & Gazette Company | 256 | — | 1 |
| AS25975US | NET2ATLANTA-GA - NET2ATLANTA.COM LLC | 256 | — | 1 |
| AS55114US | IDEATIVES - Ideatives Inc | 256 | — | 1 |
| AS32680US | CHNCTORG - Community Health Network of Connecticut | 256 | — | 1 |
| AS395727US | ASN-INTELLIC - Intellicom Computer Consulting, Inc. | 256 | — | 1 |
| AS17219US | WINGS-NET-2025 - Wings Financial Credit Union | 256 | — | 1 |
| AS6292US | MTAPD-GB - MTAPD | 256 | 2 | 3 |
| AS401950US | BUNDLE-BONE - IPNSIG INC. | 256 | 256 | 2 |
| AS11005US | DOWNINGTOWN-AREA-SD - Downingtown Area School District | 256 | — | 1 |
| AS3660US | BPC-ASN - Berry Global Inc | 256 | — | 1 |
| AS22870US | AS22870 - Syniverse Technologies, LLC | 256 | — | 1 |
| AS36157US | ACER AMERICA CORPORATION - Acer America Corporation | 256 | — | 1 |
| AS218439US | Nutraver-AS NUTRAVER LLC | 256 | — | 1 |
| AS32046US | SULLCROM - SULLCROM | 256 | — | 1 |