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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 |
| — |
| 1 |
| AS11407US | CPSD6 - Central Point School District 6 | 256 | — | 1 |
| AS400345US | HG-ITS-AS - Hourglass ITS LLC | 256 | — | 1 |
| AS54983US | FSRLAS-01 - FirstService Residential, Inc. | 256 | — | 1 |
| AS32677US | DKMC-BGP-DECATUR-GEORGIA-JUNE2004 - Dekalb Medical Center | 256 | — | 1 |
| AS27172US | 3COM-NET-ROUTER-AS27172 - 3Com Net Router | 256 | 65.8K | 13 |
| AS393825US | BOZZ-275-CT - Bozzuto's Incorporated | 256 | — | 1 |
| AS396951US | TC-EQ-DA3 - TransCanada Pipelines Limited | 256 | — | 1 |
| AS398984US | ENTWINDER - Entwinder Networks | 256 | — | 1 |
| AS395998US | SCSLC - SOUTH CAROLINA STUDENT LOAN CORPORATION | 256 | — | 1 |
| AS27002US | MIAX-MIAMI-INTERNATIONAL-HOLDINGS - Miami International Holdings, Inc | 256 | — | 1 |
| AS54399US | OREGONMUTUALINS - Oregon Mutual Insurance Company | 256 | — | 1 |
| AS402316US | ILLUMIO-INC - ILLUMIO, | 256 | — | 1 |
| AS53655US | ACCTL - Advanced Call Center Technologies, LLC | 256 | — | 1 |
| AS33278US | NSLC-ORG - National Student Clearinghouse | 256 | — | 1 |
| AS398978US | TRINET1 - Trinity Communications LLC | 256 | — | 1 |
| AS393920US | MEREDITHCORP2 - Meredith Corp. | 256 | — | 1 |
| AS399321US | HELLO-DEFENDEDGE-01 - Defend Edge | 256 | — | 1 |
| AS36732US | COMCAST-36732 - Comcast Cable Communications, LLC | 256 | — | 1 |
| AS62697US | TOK-NIDR - PIMCO | 256 | — | 1 |
| AS26740US | LIFEWAVE-ORG-1 - LifeWave, Inc. | 256 | — | 1 |
| AS13372US | FEDERATEDINV - Federated Investors | 256 | — | 1 |
| AS33290US | USSC-ASN-4-2020 - United States Sugar Corporation | 256 | — | 1 |
| AS402908US | RACKWORKS-LLC - RackWorks | 256 | — | 1 |
| AS402825US | SCRUMPTIOUS-NET - Scrumptious | 256 | 256 | 2 |
| AS62765US | ABMG-HQ - Atlantic Bay Mortgage Group, LLC | 256 | — | 1 |
| AS396489US | PPGNHI - PLANNED PARENTHOOD GREAT NORTHWEST, HAWAI'I, ALASKA, INDIANA, AND KENTUCKY | 256 | — | 1 |
| AS396138US | DKM9-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS55063US | COF-BUSINESS - City of Fairfax | 256 | — | 1 |
| AS397796US | GRMC-SC1 - Gila Regional Medical Center | 256 | — | 1 |
| AS22539US | CARDINALHEALTH-PR - Cardinal Health, Inc. | 256 | — | 1 |
| AS33228US | SOFTIRON-ASN-SJC - SoftIron | 256 | 1 | 2 |
| AS402977US | RPICORP - RESEARCH | 256 | — | 1 |
| AS16650US | TORRID - Torrid LLC | 256 | — | 1 |
| AS395388US | T4T-NET - int3 Systems, LLC | 256 | 1 | 2 |
| AS400077US | PCCLD-PRIMARY-PUBLIC01 - Pueblo City-County Library District | 256 | — | 1 |
| AS19044US | INNER - The Inner Net | 256 | — | 1 |
| AS401822US | ROCKFORD-CITY-01 - City of Rockford | 256 | — | 1 |
| AS22447US | ZING-ISP-01 - Zing Broadband | 256 | — | 1 |
| AS54920US | PHAEDON - Phaedon Acquisition, Inc. | 256 | — | 1 |
| AS197767US | Zgocloud ZgoShop, Inc. | 256 | 256 | 2 |
| AS22721US | SPC-12 - Saint Peter's University | 256 | — | 1 |
| AS23194US | PENNANT-PARK - PennantPark Investment Corporation | 256 | — | 1 |
| AS396272US | HOUSTON-TEXANS - Houston Texans | 256 | — | 1 |
| AS17290US | H2-TECHNOLOGIES-LLC - Austin Hadley, Sole Proprietorship | 256 | 4.1K | 18 |
| AS25737US | JONE - Jone Broadband LLC | 256 | 256 | 2 |
| AS18752US | HT-HB18752 - Uniti Fiber Holdings Inc. | 256 | — | 1 |