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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 2.8K |
| — |
| 5 |
| AS394749US | EQUINIX-SOLUTION-VALIDATION-CENTER - Equinix, Inc. | 2.8K | 5 | 16 |
| AS15205US | NCPDAS - Nassau County Police Department | 2.8K | — | 4 |
| AS19477US | FLYINGJ - F J Management Inc. | 2.8K | — | 11 |
| AS26989US | HR-WORLD-HEADQUARTERS - H&R Block | 2.8K | — | 8 |
| AS18715US | NYPA - New York Power Authority | 2.8K | — | 11 |
| AS25905US | FIRESERVE - FireServe, LLC | 2.8K | 65.8K | 6 |
| AS395029US | STN-001 - STN Incorporated | 2.8K | — | 10 |
| AS25673US | RMSSLB - Cellnet Innovations, Inc. | 2.8K | — | 6 |
| AS36373US | COMMUNITY-HEALTH-NETWORK - Community Hospitals, Indianapolis | 2.8K | — | 11 |
| AS19903US | REACHBROADBAND - Reach Broadband LLC | 2.8K | — | 11 |
| AS393347US | IFNCO - TollFreeForwarding.com | 2.8K | — | 11 |
| AS36165US | ITM-TELECOM - ITM TELECOM | 2.8K | — | 11 |
| AS14487US | WIND-RIVER-INTENET - Wind River Internet | 2.8K | 65.5K | 6 |
| AS17089US | CINCCHILDRENS - Cincinnati Children's Hospital Medical Center | 2.8K | — | 7 |
| AS35995US | TWITTER - Twitter Inc. | 2.8K | — | 6 |
| AS202756US | AS RFE/RL, INC. | 2.8K | — | 11 |
| AS30560US | GE-MS001 - GE Precision HealthCare LLC | 2.6K | — | 11 |
| AS54201US | WEWORK-MANAGEMENT-LLC - We Link Networks LLC | 2.6K | 29 | 40 |
| AS397370US | ACADIANA-WIRELESS - ACADIANA WIRELESS LLC | 2.6K | — | 6 |
| AS12076US | MICROSOFT - Microsoft Corporation | 2.6K | 6 | 10 |
| AS20085US | UAKRON - The University of Akron | 2.6K | — | 5 |
| AS19606US | NLSNMEDIA - THE NIELSEN COMPANY (US), LLC | 2.6K | — | 9 |
| AS13666US | VRIS-AS-BLOCK - Verizon Business | 2.6K | 1 | 10 |
| AS402899US | PTLHL - Prestige | 2.6K | 4.2M | 18 |
| AS11070US | META-AS - Metanet Communications, Inc. | 2.6K | — | 10 |
| AS398296US | DIGITALSYSTEM - Digitalsystem Technology Inc. | 2.6K | 4.1K | 5 |
| AS394723US | FCS-AS-1 - Fulton County Schools | 2.6K | — | 3 |
| AS18757US | TYCOIS - ADT Security Services, Inc. | 2.6K | — | 10 |
| AS401163US | ACGNODE - ACGNODE INC | 2.6K | 4.5M | 58 |
| AS14610US | INTEGRAL - Integral Development Corp. | 2.6K | — | 10 |
| AS25629US | ACPS-8-ASN - Albemarle County Public Schools | 2.6K | — | 6 |
| AS36201US | B2X-ONLINE-WISP-ASN - B2X Online Inc | 2.6K | — | 10 |
| AS400779US | ONTARIONET-01 - OntarioNet | 2.6K | — | 4 |
| AS46413US | FULAIR - Fulair, LLC | 2.6K | — | 7 |
| AS36508US | DIPV - digitalIPVoice, Inc | 2.6K | — | 10 |
| AS399353US | NETAFY-INC - Netafy, Inc. | 2.6K | 256 | 5 |
| AS402363US | AEJ-01 - KEYSTONE | 2.6K | — | 5 |
| AS32852US | LEXNE-ASN-1 - Lexington Electric System | 2.6K | 65.5K | 4 |
| AS399728US | PFOUNDATION - P Foundation | 2.6K | 10 | 17 |
| AS393434US | AL-DC-US - Air Link Networks | 2.6K | 4.1K | 5 |
| AS40593US | CCSI-AS - Cloud Compliance Solutions | 2.6K | — | 10 |
| AS6223US | CENTURYLINK-MTIPS1-STN - CenturyLink Communications, LLC | 2.6K | 17 | 5 |
| AS40959US | HOSTMASTER - City and County of Denver - Denver International Airport | 2.6K | — | 9 |
| AS6312US | TRIOTELASN - TrioTel Communications, Inc. | 2.6K | — | 10 |
| AS397790US | IMU - Indianola Municipal Utilities | 2.6K | 65.5K | 5 |
| AS3061US | PDNPVD-1 - ProvDotNet LLC | 2.6K | — | 3 |