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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 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.
32,220 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 | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| 256 |
| — |
| 1 |
| AS33643US | JELLYBELLY - Jelly Belly Candy Company | 256 | — | 1 |
| AS397414US | KRMC-01 - Kearney Regional Medical Center LLC | 256 | — | 1 |
| AS36346US | TOGETHER-INFRA - Together Computer, Inc. | 256 | 65.5K | 2 |
| AS54222US | CITY-OF-CEDAR-PARK - City of Cedar Park | 256 | — | 1 |
| AS20296US | EXPEDIA-ARIN - EXPEDIA, INC | 256 | — | 1 |
| AS203414US | ORG-TCGL7-RIPE The Conerly Group, LLC | 256 | — | 1 |
| AS55133US | ST-CROIX-CENTRAL-SCHOOL-DISTRICT - St. Croix Central School District | 256 | — | 1 |
| AS27245US | HEIDRICK-CHICAGO - HEIDRICK | 256 | — | 1 |
| AS29942US | AS29942 - Tanger Properties Limited Partnership | 256 | — | 1 |
| AS394017US | MIMC - Infirmary Health System, Inc. | 256 | — | 1 |
| AS32872US | DIFF-COMP-01 - Difficult Computing, LLC | 256 | 256 | 2 |
| AS395202US | BRADFORD-COUNTY-FLORIDA - Bradford County Board of County Commissioners | 256 | — | 1 |
| AS4576US | ASN1 - Michael & Susan Dell Foundation | 256 | — | 1 |
| AS13683US | AUTO-WARES-ASN - Auto-Wares Inc | 256 | — | 1 |
| AS54130US | AFBA-AS - AFBA | 256 | — | 1 |
| AS402597US | DBH-CORP - Blick | 256 | — | 1 |
| AS1045US | ZS-ASSOCIATES - ZS Associates, Inc | 256 | — | 1 |
| AS219158US | MDWS Benjamin Meadows | 256 | 1 | 2 |
| AS395836US | ALL-STATES-AG-PARTS - All States Ag Parts, Inc | 256 | — | 1 |
| AS398956US | SANTACLARITA-ASN-01 - City Of Santa Clarita | 256 | — | 1 |
| AS18807US | COMM-WIRELESS-N - Community Wireless | 256 | 65.5K | 2 |
| AS401323US | LAYERBYTE - LayerByte LLC | 256 | 256 | 2 |
| AS396833US | LASELLCOLLEGE - Lasell University | 256 | — | 1 |
| AS40083US | CENT-SQR-INTERNET - American Traffic Solutions, Inc | 256 | — | 1 |
| AS400257US | CITY-OF-ROCKLIN-AS-01 - City of Rocklin | 256 | — | 1 |
| AS399593US | DWIHN-ASN-01 - DWIHN | 256 | — | 1 |
| AS26429US | SIERRA-PACIFIC-INDUSTRIES-AN - Sierra Pacific Industries | 256 | — | 1 |
| AS46097US | BMCSVL - BMC Software, Inc. | 256 | — | 1 |
| AS47032US | CITY-OF-MIAMI - City of Miami | 256 | — | 1 |
| AS398018US | WPP-IT-CHICAGO - Group M Worldwide, LLC | 256 | — | 1 |
| AS40434US | UCIS-AS - Center for Innovation | 256 | — | 1 |
| AS18521US | AMERICAN-CAMPUS-COMMUNITIES - American Campus Communities, Inc | 256 | — | 1 |
| AS398965US | ENERBANKUSA - EnerBank USA | 256 | — | 1 |
| AS394145US | SCEFCU - SCE Federal Credit Union | 256 | — | 1 |
| AS401546US | HCDL-ASHBURN-DATA-CENTER - H5 Data Centers | 256 | — | 1 |
| AS23041US | PENNHIGHLANDSCC - Pennsylvania Highlands Community College | 256 | — | 1 |
| AS30014US | EDF-RE-MONTREAL - EDF Renewables, Inc. | 256 | — | 1 |
| AS14073US | NEXTJUMPINC - Next Jump, Inc. | 256 | — | 1 |
| AS63282US | YVFWC - Yakima Valley Farm Workers Clinic | 256 | — | 1 |
| AS36260US | MISAKA-BIZNET-AS - Misaka Network, Inc. | 256 | — | 1 |
| AS401624US | OMNISSA-BLR - Omnissa, LLC | 256 | 1 | 2 |
| AS401052US | KONVERGENCE-TECHNOLOGIES - Konvergence Technologies | 256 | — | 1 |
| AS30395US | SAHS - SWEDISHAMERICAN HEALTH SYSTEM CORPORATION | 256 | — | 1 |
| AS26578US | NATIONWIDEASN2 - Nationwide Mutual Insurance Company | 256 | — | 1 |
| AS400757US | PRECORP - Powder River Energy Corporation | 256 | 1 | 2 |
| AS46216US | ICECONSULTING - Ice Consulting | 256 | — | 1 |