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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 | 24,632 |
| 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.
32,210 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 | 4,359 |
| 256 |
| — |
| 1 |
| AS40409US | MARMOT-LIBRARY-NETWORK - Marmot Library Network, Inc. | 256 | — | 1 |
| AS53899US | SERVICEHUB - ServiceHub Corporation | 256 | — | 1 |
| AS399985US | LL-DC - Pemco Mutual Insurance Company | 256 | — | 1 |
| AS22596US | CHR-823 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS398922US | JDSL-ASN - Jubilee Data Systems, LLC | 256 | 1 | 2 |
| AS398874US | LOSTCREEKTECHASN-01 - Lost Creek Technology L.L.C. | 256 | 4.1K | 2 |
| AS14304US | TSYS-SDC-CIV - Global Payments Inc. | 256 | — | 1 |
| AS394387US | VUU - Virginia Union University | 256 | — | 1 |
| AS397862US | CCFCU - Catalyst Corporate Federal Credit Union | 256 | — | 1 |
| AS395882US | POWER-SJ - Power Integrations, INC. | 256 | — | 1 |
| AS54399US | OREGONMUTUALINS - Oregon Mutual Insurance Company | 256 | — | 1 |
| AS14036US | STACKAV-01 - Stack AV | 256 | — | 1 |
| AS14128US | NU-EDU - National University | 256 | — | 1 |
| AS2538US | IBM-PLP - IBM | 256 | — | 1 |
| AS401691US | ABM-859 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS17046US | ACTION-COMM - Action Communications, Inc. | 256 | — | 1 |
| AS393348US | SUC-CORP1 - Southern Union Conference of Seventh day Adventists | 256 | — | 1 |
| AS402542US | CLOUDFLARENET - Cloudflare, | 256 | 1 | 2 |
| AS61402US | BIO-RAD-ASN Bio-Rad Laboratories, Inc. | 256 | — | 1 |
| AS397597US | RHF-ASN - RHF Investments | 256 | — | 1 |
| AS46152US | SLG - SL Green Realty Corp | 256 | — | 1 |
| AS6224US | CENTURYLINK-MTIPS2-CHI - CenturyLink Communications, LLC | 256 | — | 1 |
| AS400038US | BEMIS-MANUFACTURING - BEMIS MANUFACTURING COMPANY | 256 | — | 1 |
| AS22712US | POSHY1 - POSHMARK Inc. | 256 | — | 1 |
| AS394152US | L3-DS - L Cube Strategic Support Services LLC | 256 | — | 1 |
| AS396844US | WRRE-1 - William Raveis Real Estate, Incorporated. | 256 | — | 1 |
| AS46578US | AS46578 - Seer Capital Management, LP | 256 | — | 1 |
| AS399321US | HELLO-DEFENDEDGE-01 - Defend Edge | 256 | — | 1 |
| AS54667US | DDAF-FTW - Dean Dorton | 256 | — | 1 |
| AS399818US | LAER-AS-DEN1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS22447US | ZING-ISP-01 - Zing Broadband | 256 | — | 1 |
| AS40876US | CITYOFLARGO-01 - City of Largo | 256 | — | 1 |
| AS33466US | FLVS-AS - Florida Virtual School | 256 | — | 1 |
| AS402393US | ROCKYNET - RockyNet | 256 | 256 | 2 |
| AS40296US | RUBENSTEIN-COMMUNICATIONS - Rubenstein Associates, Inc. | 256 | — | 1 |
| AS400485US | APOG-PUERTA-DEL-SOL - Apogee Telecom Inc. | 256 | — | 1 |
| AS401345US | ERNESTECH-ASN-01 - ErnesTech LLC | 256 | — | 1 |
| AS398934US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS13685US | ASN-RCSD-01 - Rochester City School District | 256 | 4.1K | 2 |
| AS401899US | BAER-CONSULTING-2 - Baer Consulting, Incorporated | 256 | — | 1 |
| AS399848US | TELEPRO-01 - TelePro, Inc. | 256 | — | 1 |
| AS33311US | NET-TOPCON - TOPCON POSITIONING SYSTEMS INC | 256 | — | 1 |
| AS18544US | NKTR-AS01 - Nektar Therapeutics | 256 | — | 1 |
| AS36607US | ACM - Association for Computing Machinery, Inc | 256 | — | 1 |
| AS394658US | TSG-INET-01 - Sedona Technologies | 256 | — | 1 |
| AS64218US | LEGACY-MIDSTATE-01 - Allied | 256 | — | 1 |