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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 |
| 20K |
| — |
| 33 |
| AS11979US | BLUENET - Bluegrass Network LLC | 20K | 67.1K | 32 |
| AS10271US | MEGANET-TCIX - Meganet Communications | 20K | 65.5K | 17 |
| AS397501US | PURDUE-RESNET - Purdue University | 20K | 256 | 11 |
| AS64236US | UNREAL-SERVERS - UnReal Servers, LLC | 20K | 921.6K | 31 |
| AS30221US | T3COM - T3 Communications, Inc. | 20K | — | 19 |
| AS14495US | ASN-14495 - Nasdaq, Inc. | 19.7K | — | 33 |
| AS5662US | WBD-AS5662 - Turner Broadcasting System, Inc. | 19.7K | 3 | 21 |
| AS11597US | MW-KANSAS - Mercury Broadband | 19.7K | 86K | 43 |
| AS13343US | TWC-13343-CHARLOTTE - Charter Communications Inc | 19.7K | 16 | 11 |
| AS11563US | NETENTERPRISE - NetEnterprise Inc. | 19.7K | 65.5K | 6 |
| AS1819US | DCM-CABLE - DCM Cable Inc. | 19.7K | — | 19 |
| AS1699US | ANS-1699-AS - Verizon Business | 19.7K | — | 43 |
| AS16557US | COLOSOLUTIONS - Colo Solutions | 19.7K | 65.5K | 31 |
| AS40866US | MYSERVER-DOT-ORG - San Diego Broadband | 19.7K | — | 16 |
| AS36097US | NUGGET-SAN - Nugget Enterprises, Inc. | 19.7K | 65.5K | 10 |
| AS402506US | ZENIX - Zenixcloud | 19.7K | — | 41 |
| AS19628US | MCG-NET-1 - Mahaska Communication Group, LLC | 19.7K | 65.5K | 40 |
| AS54288US | SOLIDTOOLSINC - SolidTools Technology, Inc. | 19.7K | 1M | 48 |
| AS12044US | SCTCNET - Willamette Valley Internet | 19.7K | — | 11 |
| AS3614US | DELL-BLK - Dell, Inc. | 19.7K | 154 | 78 |
| AS29744US | UTMA - United Telephone Mutual Aid Corporation | 19.7K | 65.5K | 33 |
| AS14792US | DST-ASN - DST Systems, Inc. | 19.5K | — | 44 |
| AS33470US | CANBYTELEPHONEASSOCIATION - Canby Telephone Association | 19.5K | 65.5K | 7 |
| AS6250US | NEONOVA-NET - NeoNova Network Services, LLC | 19.5K | — | 41 |
| AS6034US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 19.5K | 5 | 38 |
| AS14437US | FLEMING - C&S WHOLESALE GROCERS INC. | 19.5K | — | 13 |
| AS23305US | WORTHINGTONINDUSTRIES - Worthington Enterprises, Inc. | 19.5K | — | 13 |
| AS396402US | MULTICARE-HEALTH-SYSTEM - MultiCare Health System | 19.5K | — | 6 |
| AS40128US | MUSFIBERNET - Morristown Utility Systems | 19.5K | — | 8 |
| AS26134US | BROAD-RUN-BORDER-AS - VeriSign Infrastructure & Operations | 19.5K | 11 | 41 |
| AS401415US | ALLIANCECOM-NET - Alliance Communications | 19.5K | — | 22 |
| AS22006US | PRONSS-PULKCO-AS - PRONSS | 19.2K | — | 41 |
| AS394547US | BART-OCIO - San Francisco Bay Area Rapid Transit District | 19.2K | — | 12 |
| AS2727US | GEPB2009 - Electric Plant Board of the City of Glasgow, Kentucky | 19.2K | — | 22 |
| AS55232US | MX-HOSTED - Zultys, Inc. | 19.2K | — | 49 |
| AS20303US | BAM - BAM Broadband Opco, LLC | 19.2K | 768 | 22 |
| AS11414US | NVIDIA-NET - Nvidia Corporation | 19.2K | 16.9K | 70 |
| AS393892US | MCTC1 - Mid Century Communications | 19.2K | — | 8 |
| AS20448US | SCIPIO-TECH-20448 - Peace Communications LLC | 19.2K | 65.5K | 11 |
| AS32899US | BRESCOBROADBAND - Bresco Broadband | 19.2K | 69.6K | 34 |
| AS32083US | OMNISPRING - Omnispring, LLC | 19.2K | — | 39 |
| AS32212US | HSB-EDGE - Sky Fiber Internet | 18.9K | — | 39 |
| AS397644US | UNIVERSITY-OF-MARY-WASHINGTON - University of Mary Washington | 18.9K | — | 11 |
| AS21898US | PTN-AS1 - Plant TiftNet, Inc | 18.9K | 65.5K | 59 |
| AS395876US | HUXCOMM-01 - Huxley Communications Cooperative | 18.9K | 65.5K | 41 |
| AS14200US | MARSHALLUNIV - Marshall University | 18.9K | 1 | 5 |