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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. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,144 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 | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
| — |
| — |
| 0 |
| AS400429US | ALTHEA - Hawk Networks Inc | — | 8 | 1 |
| AS5700US | XL-NET - MISHA, Inc. | — | — | 0 |
| AS4032US | ASN-4020-1 - Air Force Systems Networking | — | — | 0 |
| AS5804US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5768US | ICANECT - ICANECT | — | — | 0 |
| AS5657US | NOVAIAC-ASN - FC Business Systems | — | — | 0 |
| AS402565US | JDKL - JDKL | — | 1 | 1 |
| AS4104US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS11021US | NVH-ASN - North Valley Hospital | — | 256 | 1 |
| AS397785US | TISTLASN01 - Tortoise Capital Advisors, L.L.C. | — | — | 0 |
| AS5055US | WANET - Software Design Associates | — | — | 0 |
| AS4908US | AS-CONCENTRIC - Verizon Business | — | — | 0 |
| AS396646US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396752US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396767US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396694US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS397955US | DEEPSOUTHCOMMUNICATIONS - Deep South Communications LLC | — | 1 | 1 |
| AS397699US | TPCASN - TPC GROUP LLC | — | — | 0 |
| AS396581US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396453US | VENUS-PEAK10 - Venus Fashion, Inc. | — | — | 0 |
| AS6000US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS202142US | PACKETHARBOR PacketHarbor LLC | — | 4.1K | 4 |
| AS1320US | DNIC-AS-1320 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1468US | DNIC-ASBLK-01467-01468 - Headquarters, USAISC | — | — | 0 |
| AS1367US | DNIC-AS-01367 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1350US | SEARSNET-AS - Sears Technology Services Incorporated | — | — | 0 |
| AS1033US | HPE-AMS-CFC - HEWLETT PACKARD ENTERPRISE COMPANY | — | — | 0 |
| AS33042US | NETIFACE-TORONTO - Netiface LLC | — | 65.5K | 1 |
| AS700US | ROKNET-AS - The Boeing Company | — | — | 0 |
| AS22503US | METHOD-01 - Method Security Inc | — | 128 | 2 |
| AS5207US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS6032US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6007US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS168US | UMASS-AMHERST - University of Massachusetts - AMHERST | — | 256 | 1 |
| AS5902US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5923US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5899US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS402653US | WCUUSD-2026-ASN - Washington | — | 16 | 1 |
| AS6500US | NEXUS-22-6500 - Nexusguard, Inc | — | — | 0 |
| AS6938US | GREENLAKE-IOC - Greenlake/IOC | — | — | 0 |
| AS6627US | GRAPEVINE - Grapevine Systems, Inc. | — | — | 0 |
| AS6616US | DATASTAR - Datastar, Inc. | — | — | 0 |
| AS6415US | SILICONREEF - Silicon Reef, Inc. | — | — | 0 |
| AS5822US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS6393US | PRYSM-AS - Prysm Technologies | — | — | 0 |
| AS200790US | BYTEFIZZ BYTEFIZZ LLC | — | 512 | 2 |