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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 | 24,358 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,342 |
| NRUCFC - National Rural Utilities Cooperative Finance Corporation |
| 768 |
| — |
| 3 |
| AS14310US | SNB-ASN - Safra National Bank Of New York | 768 | — | 3 |
| AS32957US | AVSL-AS32957 - FactSet Research Systems, Inc. | 768 | — | 3 |
| AS399071US | BELLIN-MEMORIAL-HOSPITAL - Bellin Memorial Hospital, Inc. | 768 | — | 2 |
| AS46700US | KANDY-NA - AVCtechnologies USA Inc. | 768 | — | 3 |
| AS3577US | AS3577 - Vestas American Wind Technology | 768 | — | 3 |
| AS33603US | DOMINOS-WRC-BLK01 - DOMINOS PIZZA, LLC | 768 | — | 3 |
| AS16903US | TIGER-47 - Texas Southern University | 768 | — | 2 |
| AS54319US | ARXSYSTEMS-ASN01 - Arxsystems.Io LLC | 768 | 4.1K | 3 |
| AS22328US | CSHS - Cedars-Sinai Health Systems | 768 | — | 3 |
| AS399502US | VALUEHOSTED-US - THE VALUE HOSTED LLC | 768 | 2 | 5 |
| AS36229US | YAHOO-YSM-SC8 - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS397802US | CALBAPTIST - CALIFORNIA BAPTIST UNIVERSITY | 768 | — | 3 |
| AS13426US | JUNO-DC-2 - Juno Online Services, Inc. | 768 | — | 3 |
| AS53336US | BSQL-AS-01 - BSQL Networking | 768 | 256 | 3 |
| AS394962US | PCT-ASN1 - PENNSYLVANIA COLLEGE OF TECHNOLOGY | 768 | — | 3 |
| AS19681US | DIGGIO - Networkitects, Inc. | 768 | 65.5K | 3 |
| AS54664US | TBCCO-AS-01 - TBC Corporation | 768 | — | 3 |
| AS63331US | LBL-2 - Lawrence Berkeley National Laboratory | 768 | 4 | 6 |
| AS19312US | JOHN-MUIR-HEALTH - John Muir Health | 768 | — | 3 |
| AS17091US | HOLLCORP - Hollister Incorporated | 768 | — | 2 |
| AS25683US | FFB-NET-ASN - First Financial Bank | 768 | — | 4 |
| AS394858US | UNIVERSITY-OF-NEW-HAVEN - University of New Haven | 768 | 1 | 3 |
| AS17320US | CFCU - Coastal Federal Credit Union | 768 | — | 3 |
| AS22340US | AS22340 - XONODE | 768 | — | 3 |
| AS393342US | EA-ASHBURN - Electronic Arts, Inc. | 768 | — | 2 |
| AS12074US | ITSC - County of Saginaw | 768 | — | 3 |
| AS11806US | LEEPFROG - Leepfrog Technologies, Inc. | 768 | — | 3 |
| AS15197US | CONCORD - Concord Technologies | 768 | — | 3 |
| AS10666US | ALLERGAN - Allergan, Inc. | 768 | — | 3 |
| AS53396US | STRAC - STRAC | 768 | — | 3 |
| AS40817US | BMC-AUS - BMC Software, Inc. | 768 | — | 3 |
| AS55218US | IWISP-LLC - iWiSP llc | 768 | — | 3 |
| AS53268US | EIS-SFO-AS - EIS Group, INC | 768 | — | 3 |
| AS399452US | RPECEL - Rugged | 768 | — | 3 |
| AS14280US | NETNATION - Ntirety, Inc. | 768 | 1 | 4 |
| AS33743US | HVW-ALB1 - Hudson Valley Wireless | 768 | — | 3 |
| AS29813US | WNBAS - Woodforest National Bank | 768 | — | 3 |
| AS19389US | GOLUB - GOLUB CORPORATION | 768 | — | 3 |
| AS401610US | TRAFIX-LLC - TRAFiX LLC | 768 | — | 3 |
| AS15045US | KITTELSON - KITTELSON AND ASSOCIATES, INC. | 768 | — | 3 |
| AS397933US | DC2-WAN - Clark Associates, Inc. | 768 | 1 | 4 |
| AS40147US | UCBI - United Community Bank | 768 | — | 2 |
| AS11199US | SHOWNETSAS - showNets LLC | 768 | — | 3 |
| AS11437US | CMM-AS - ClearSky Technologies, Inc. | 768 | — | 3 |
| AS924US | CLOUDIE - Cloudie Networks LLC | 768 | 4.9K | 7 |
| AS398017US | RTBHOUSE-PHX - RTB House Inc. | 768 | 1 | 3 |