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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS16386US | PROGRESSIVEPRODUCE - Progressive Produce Corporation | 256 | — | 1 |
| AS22022US | HUB-GROUP - Hub Group, Inc. | 256 | — | 1 |
| AS401971US | CITY-OF-JOHNS-CREEK-GA - City of Johns Creek | 256 | — | 1 |
| AS46733US | X6CNET - x6c | 256 | 7 | 8 |
| AS27625US | UBNT-AS - Ubiquiti Networks, Inc. | 256 | 1 | 2 |
| AS399816US | LAER-AS-ATL1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS399691US | MAJCS-CCOM - Washington County Consolidated Communications Agency | 256 | — | 1 |
| AS396508US | MICHELS-CORPORATION - Michels Corporation | 256 | — | 1 |
| AS62784US | MIO-AS - MIO Partners, Inc. | 256 | — | 1 |
| AS53742US | HRH-ASN - Houlton Regional Hospital | 256 | — | 1 |
| AS22620US | BOARDPENSIONS-PRESBYTERIAN - The Board of Pensions of the Presbyterian Church (USA) | 256 | — | 1 |
| AS19866US | NPGCO-STJO - News-Press & Gazette Company | 256 | — | 1 |
| AS395028US | REY1 - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS62933US | SMC-AS - Statewide Central Station | 256 | — | 1 |
| AS63046US | BRAVE - Brave Software, Inc. | 256 | — | 1 |
| AS397371US | HCDE-TEXAS - Harris County Department of Education Public Facil | 256 | — | 1 |
| AS140890US | MCDCORP-GLOBAL-AS-AP - McDonald's Corporation | 256 | — | 1 |
| AS396469US | NUWAVE-TECHNOLOGY-INC - Nuwave Technology Inc | 256 | — | 1 |
| AS396347US | HCC-ASN - Hutchinson Community College | 256 | — | 1 |
| AS40743US | CJPIA-ASN1 - California Joint Powers Insurance Authority | 256 | — | 1 |
| AS397154US | GRANULES-CONSUMER-HEALTH-NET - Granules Consumer Health | 256 | — | 1 |
| AS54150US | BMC-LE - BROADLAWNS MEDICAL CENTER | 256 | — | 1 |
| AS398303US | DIAMEDIC-SLC001 - Diamedic.NET | 256 | — | 1 |
| AS396978US | ORANGE-WATER-SEWER-AUTHORITY - Orange Water and Sewer Authority | 256 | 1 | 2 |
| AS54474US | CITY-OF-SANTA-CRUZ - City of Santa Cruz | 256 | — | 1 |
| AS397434US | CSBS-HQ - Conference of State Bank Supervisors, Inc. | 256 | — | 1 |
| AS393647US | OFS-NORCROSS - OFS FITEL, LLC | 256 | — | 1 |
| AS400923US | ENC-DAL - Encore Group (USA) LLC | 256 | — | 1 |
| AS21605US | AHBELO-CORP - DallasNews Corporation | 256 | — | 1 |
| AS393379US | SEI-HOUSTON - Seismic Exchange, Inc. | 256 | — | 1 |
| AS393712US | DMA-FWA-DC - DMA | 256 | — | 1 |
| AS54025US | CAPELLAUNIVERSITY - Capella University | 256 | — | 1 |
| AS54537US | STOCKMAN-BANK-19 - Stockman Bank of Montana | 256 | — | 1 |
| AS23070US | VCHS-ORDNE - Valley County Health System | 256 | — | 1 |
| AS18470US | GL-GFASN-01 - GraceWorks, LLC | 256 | 17 | 3 |
| AS399881US | WIFICARIBE - WiFi Services Caribbean, Inc. | 256 | 65.5K | 2 |
| AS394442US | PCBF-NYC1 - Pearl Capital Business Funding LLC | 256 | — | 1 |
| AS15210US | VIV-ASN - Vividion Therapeutics, Inc. | 256 | — | 1 |
| AS198304US | DOVENET - MoeDove | 256 | 512 | 3 |
| AS397190US | WSP-DIGITAL - WSP | 256 | 1 | 2 |
| AS400563US | AS-MVPS621-01 - Mounds View Public Schools | 256 | 256 | 2 |
| AS63341US | ROKI-AMERICA - ROKI America Co., Ltd. | 256 | — | 1 |
| AS397309US | NTTDATA-TAG-FTC - Transaction Applications Group, Inc. | 256 | — | 1 |
| AS27000US | COTYINC - Coty Inc. | 256 | — | 1 |
| AS11253US | AAAWIRELESSIT - AAAWIRELESSIT | 256 | 65.5K | 2 |
| AS10723US | MGL-40-ASN - Meritage Group LP | 256 | — | 1 |