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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| 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 |
| 2 |
| AS53487US | VHS-BOMA - Vanguard Health Management, Inc. | 256 | — | 1 |
| AS400538US | QSI-NETWORK-SOLUTIONS - QSi Network Solutions | 256 | — | 1 |
| AS46607US | FORREST-T-JONES - Forrest T Jones & co, Inc. | 256 | — | 1 |
| AS53678US | OFFICERING-ASH - OFFICERING LLC | 256 | — | 1 |
| AS402604US | QUEENSVALE - Queensvale | 256 | 4.2M | 9 |
| AS395491US | RADIAN-GROUP-INC - Radian Group, Inc | 256 | — | 1 |
| AS46803US | GTCR-300NL-1 - GTCR Golder Rauner, LLC | 256 | — | 1 |
| AS402077US | MSE-01 - Monumental Sports & Entertainment | 256 | — | 1 |
| AS394592US | DDAF-LEX - Dean Dorton | 256 | 1 | 2 |
| AS400023US | ISD279-OSSEO-AREA-SCHOOLS - ISD 279 Osseo Area Schools | 256 | — | 1 |
| AS398028US | PSFC-NYC - Park Slope Food Coop Inc | 256 | — | 1 |
| AS397977US | ANA-218-LB - American Nurses Association, Inc | 256 | — | 1 |
| AS26093US | HAR - Houston Association of Realtors | 256 | — | 1 |
| AS22336US | PELLA - Pella Corporation | 256 | 1 | 2 |
| AS19150US | ABCWUA-ASN - Albuquerque Bernalillo County Water Utility Authority | 256 | — | 1 |
| AS400901US | KLG-DATACENTER - Keller Logistics Group, INC | 256 | — | 1 |
| AS47092US | ITRNA - ITR America, LLC | 256 | — | 1 |
| AS30479US | RLC-ASN-01 - Red Lion Controls, Inc. | 256 | — | 1 |
| AS22416US | LIBERTYDENTALPLAN - Liberty Dental Plan | 256 | — | 1 |
| AS402092US | WEBSEC - WEBSEC | 256 | — | 1 |
| AS402285US | MATTHEW - Matthew Daniel Brown LLC | 256 | — | 1 |
| AS402619US | INTELOC - Inteloc | 256 | 256 | 2 |
| AS400669US | RELIABLE-ISP-01 - ReliableNetwerks, Inc. | 256 | 65.5K | 2 |
| AS396980US | API-EGVDC-01 - Absolute Performance, Inc. | 256 | — | 1 |
| AS393767US | PROTO-LABS - Proto Labs | 256 | — | 1 |
| AS394339US | EMA-TP-CORP - eMoney Advisor | 256 | — | 1 |
| AS13714US | AS-AFILIAS-SYD1 - Afilias, Inc. | 256 | — | 1 |
| AS1909US | CAIDA - San Diego Supercomputer Center | 256 | 2K | 3 |
| AS395825US | CRG-AS - Cape Radiology Group | 256 | — | 1 |
| AS399579US | CPASNET2 - Centerview Partners, LLC | 256 | — | 1 |
| AS395384US | MUFSD-1 - Massapequa Union Free School District | 256 | — | 1 |
| AS398838US | STRAUB-COLLABORATIVE - Straub Collaborative, Inc. | 256 | 1 | 2 |
| AS397581US | MGS-EXIT-HUB - MIC GLOBAL SERVICES, LLC | 256 | — | 1 |
| AS36442US | MERCURY HEALTHCARE - WebMD, LLC | 256 | — | 1 |
| AS62830US | RIOT-CORP-SVCS - RiotGames | 256 | — | 1 |
| AS1492US | DNIC-ASBLK-01492-01493 - Headquarters, USAISC | 256 | — | 1 |
| AS27228US | PHILLYIX-INFRA - Philadelphia Internet Exchange | 256 | 4.1K | 2 |
| AS32730US | NAHQPU - LG CNS America Inc. | 256 | — | 1 |
| AS11603US | WATERMARK - Watermark Estate Management Services, LLC | 256 | — | 1 |
| AS207419US | Richard-Marino Richard Marino | 256 | — | 1 |
| AS400219US | COMMUNITYLTE - Local Pro | 256 | — | 1 |
| AS36109US | BCL-28205 - Bahakel Communications Ltd. | 256 | — | 1 |
| AS398552US | CISD-ASN - Cleburne Independent School District | 256 | — | 1 |
| AS46848US | VOTACALL-ONE - Votacall Inc. | 256 | — | 1 |
| AS398168US | GIRMC-NET-01 - Grand Island Regional Medical Center | 256 | — | 1 |
| AS16655US | HARTWICK-01 - Hartwick College | 256 | — | 1 |