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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 | 23,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| 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.
32,143 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 | 3,820 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,994 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,278 |
| 257.5K |
| 256 |
| 230 |
| AS7270US | NET2PHONE - IDT Corporation | 257.3K | — | 110 |
| AS32244US | LIQUIDWEB - Liquid Web, L.L.C | 256K | 24.6K | 58 |
| AS6360US | UNIVHAWAII - University of Hawaii | 255.5K | 65.5K | 12 |
| AS14325US | OSHEAN - OSHEAN, Inc. | 250.6K | 131.1K | 24 |
| AS6300US | CCI-TEXAS - Fidium | 248.1K | 65.5K | 70 |
| AS19871US | NETWORK-SOLUTIONS-HOSTING - Network Solutions, LLC | 245.5K | 16 | 217 |
| AS6039US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 242.9K | — | 68 |
| AS20021US | LNH-INC - Ntirety, Inc. | 241.7K | 131.1K | 26 |
| AS3464US | ASC-NET - Alabama Supercomputer Authority | 240.9K | 98.8K | 121 |
| AS225US | VIRGINIA-AS - University of Virginia | 240.1K | — | 21 |
| AS73US | WASHINGTON-AS - University of Washington | 239.1K | 65.5K | 11 |
| AS396356US | LATITUDE-SH - Latitude.sh | 238.3K | 799.5K | 1,028 |
| AS138US | DNIC-AS-00138 - United States Department of Defense (DoD) | 236.3K | — | 18 |
| AS1602US | DNIC-AS-01602 - Headquarters, USAISC | 235.8K | 4 | 140 |
| AS23473US | PAVLOVMEDIA - PAVLOV MEDIA INC | 234.8K | 81.2K | 808 |
| AS14051US | SUREWEST - Fidium | 234.5K | 135.2K | 109 |
| AS1600US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 233.5K | 6 | 175 |
| AS15224US | OMNITURE - Adobe Inc. | 233.2K | 10 | 81 |
| AS19551US | INCAPSULA - Incapsula Inc | 233K | 728 | 1,638 |
| AS2920US | LACOE - Los Angeles County Office of Education | 231.4K | — | 225 |
| AS2906US | AS-SSI - Netflix Streaming Services Inc. | 231.4K | 193.1K | 456 |
| AS32982US | DOE-HQ - U.S. Department of Energy | 231.4K | 69.7K | 39 |
| AS1998US | STATE-OF-MN - State of Minnesota | 230.9K | 65.5K | 11 |
| AS1637US | DNIC-AS-01637 - Headquarters, USAISC | 230.7K | 1 | 113 |
| AS6527US | MASSACHUSETTS - Commonwealth of Massachusetts | 230.4K | — | 13 |
| AS6192US | UCDAVIS-CORE - University of California, Davis | 229.9K | 65.6K | 9 |
| AS398823US | PEG-LA - PEG TECH INC | 229.6K | — | 86 |
| AS10405US | UPRR-ASN-01 - Union Pacific Railroad Company | 229.4K | — | 7 |
| AS12119US | I3BROADBAND - ITV-3 | 229.1K | 65.5K | 90 |
| AS13760US | UNITI-FIBER - Uniti Fiber Holdings Inc. | 229.1K | 200.7K | 176 |
| AS20412US | CLARITY-TELECOM - Clarity Telecom LLC | 229.1K | 4.3K | 410 |
| AS22351US | INTELSAT-1 - INTELSAT GLOBAL SERVICE CORPORATION | 228.4K | 196.6K | 84 |
| AS20278US | NEXEON - Nexeon Technologies, Inc. | 227.6K | 69.7K | 267 |
| AS400619US | AROSS-AS - AROSSCLOUD INC. | 226.3K | — | 367 |
| AS3360US | DXC-AS3360 - DXC US Latin America Corporation | 223.7K | 110 | 459 |
| AS1706US | UNIV-ARIZ - The University of Arizona | 222K | 65.5K | 66 |
| AS30404US | BLUESTREAMFIBER - Blue Stream | 221.4K | 1.2M | 26 |
| AS54801US | ZILLION-NETWORK - Zillion Network Inc. | 219.9K | — | 205 |
| AS665US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | 219.6K | — | 41 |
| AS1798US | OREGON - State of Oregon | 219.1K | 131.1K | 24 |
| AS2637US | GEORGIA-TECH - Georgia Institute of Technology | 217.9K | 65.5K | 18 |
| AS38US | UIUC - University of Illinois | 217.7K | 1M | 10 |
| AS35908US | VPLSNET - Krypt Technologies | 217.6K | 133.1K | 464 |
| AS70US | NLM-GW - National Library of Medicine | 217.1K | 2 | 67 |
| AS5371US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 216.1K | — | 226 |
| AS46255US | CHARLOTTE-MECKLENBURG-SCHOOLS-NC - Charlotte-Mecklenburg Schools | 214.8K | — | 34 |