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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 |
| 1 |
| 1 |
| AS399154US | SECURITYSERVICES - Vercara, LLC | — | 256 | 1 |
| AS207414US | Ganawa-James-Juanah Ganawa Juanah | — | 2 | 2 |
| AS16626US | DATABANK-ZCOLO - zColo | — | 1 | 1 |
| AS402402US | CELL - Infoecell | — | 1M | 2 |
| AS218876US | NR-DIGITAL-LLC-AS N.R. Digital LLC | — | 512 | 2 |
| AS216225US | qprisk Quest & Pearson LLC | — | 32 | 2 |
| AS54852US | F4-NETWORKS - F4 Networks | — | 1 | 1 |
| AS219383US | LewisAS Andrew Lewis | — | 20 | 5 |
| AS401775US | KV-LVDC-01 - KnightVision | — | 256 | 1 |
| AS6584US | MICROSOFT-GP-AS - Microsoft Corporation | — | 1 | 1 |
| AS402653US | WCUUSD-2026-ASN - Washington | — | 16 | 1 |
| AS401113US | SCH-TEST-AS - RackGenius | — | 2 | 2 |
| AS55126US | HPDF-JLAB - High Performance Data Facility | — | 1 | 1 |
| AS402537US | YMISO - YMISO | — | 32 | 2 |
| AS36262US | HASHTABLE-PREMIUM-TIER - HashTable, Inc. | — | 10 | 10 |
| AS401659US | DX-FIBER - DOXX.NET CORPORATION | — | 1 | 1 |
| AS400429US | ALTHEA - Hawk Networks Inc | — | 8 | 1 |
| AS402664US | EHOCGL - Evergreen | — | 2.6M | 5 |
| AS396931US | HOSTROYALE-TECHNOLOGIES-02 - HostRoyale LLC | — | 524.3K | 1 |
| AS4296US | CENTURYLINK-MTIPS3-BUR - CenturyLink Communications, LLC | — | 0 | 3 |
| AS11938US | ABANTU - NCRYPTD LLC | — | 1 | 1 |
| AS394536US | CLOUDFLARENET-SFO - Cloudflare, Inc. | — | 1 | 1 |
| AS402749US | CORE42-US - CORE42 | — | 256 | 1 |
| AS197272US | PHILIPHOGAN Philip Hogan | — | 1 | 1 |
| AS10941US | TECHCOM-1 - Genuine Telecom | — | 256 | 1 |
| AS197867US | WONG-AS FELIX WONG TRADING AS FANTASTIC HOMEWARE USA CO | — | 256 | 1 |
| AS402642US | CRLML - Classic | — | 5.2M | 10 |
| AS40893US | ASN-NA-XIPE - Xipe Networks | — | 17 | 2 |
| AS33655US | CMCS - Comcast Cable Communications, LLC | — | 7 | 7 |
| AS197992US | DEFSOLUTION-LLC DEFSOLUTION LLC | — | 7.9M | 15 |
| AS3852US | MAGICMONAD - Magic Monad LLC | — | 65 | 2 |
| AS199746US | NextServ NextServ LLC | — | 4.4K | 8 |
| AS200085US | WEILNET WeilNet, LLC | — | 5 | 5 |
| AS398325US | SALTANT-SOLUTIONS - Saltant Solutions LLC | — | 512 | 2 |
| AS200556US | CADY-AS Ethan Cady | — | 259 | 4 |
| AS402801US | ANDRII-NET - Andrii | — | 3 | 3 |
| AS199018US | ASXKRME Xkrme Network LLC | — | 134 | 8 |
| AS13956US | RGTC-1 - Richland-Grant Telephone Cooperative, Inc. | — | 256 | 1 |
| AS402460US | UAMS-SCIENCE-DMZ - University | — | 1 | 1 |
| AS54441US | RAVENNACREEK-AS-1 - RAVENNA CREEK, LLC | — | 16 | 1 |
| AS47778US | SUNOAKI-NET-BACKBONE Sunoaki Network LLC | — | 15 | 12 |
| AS19645US | IXSYSTEMS - iXSystems, Inc | — | 2 | 2 |
| AS972US | CF3 - Cofractal, Inc. | — | 3 | 3 |
| AS399011US | C3AERO - C3Aero LLC | — | 1 | 1 |
| AS401507US | IMPUT - imput | — | 2 | 2 |
| AS10559US | WEBSTREETSECURITIES - Web Street Securities, Inc. | — | — | 0 |