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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) | 227.7M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS46741US | AS-LONDON - Morningstar, Inc. | 256 | — | 1 |
| AS399284US | LUYS - luYs, Inc. | 256 | 18 | 19 |
| AS400520US | MTNLINKD-01 - Mtnlinkd, Inc | 256 | — | 1 |
| AS30339US | DGLAW - Davis & Gilbert LLP | 256 | — | 1 |
| AS394619US | OANDA-2 - OANDA Corporation | 256 | — | 1 |
| AS402464US | CNET-PR-01 - Curetopia | 256 | — | 1 |
| AS54663US | HALIFAXHEALTH-WEBAPPS - Halifax Health | 256 | — | 1 |
| AS32572US | AVENIR - Avenir Solutions Inc. | 256 | — | 1 |
| AS401523US | AUCTIONHARMONY - Auction Harmony | 256 | 1 | 2 |
| AS394250US | PDS-DC1 - Pacific Dental Services | 256 | — | 1 |
| AS11418US | LIGHTEDGE-AS-03 - LightEdge Solutions | 256 | 4.1K | 2 |
| AS46613US | CV-RI-HQ - COLLETTE VACATIONS | 256 | — | 1 |
| AS396474US | ANNEX-FIBER - Annex Fiber Inc. | 256 | 256 | 2 |
| AS393794US | BRADLEY - Bradley Arant Boult Cummings, LLP | 256 | — | 1 |
| AS401303US | NNM-004 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS1084US | IMIL-4-NETWORK - Intermountain Medical Imaging | 256 | — | 1 |
| AS393940US | ULTRADENT-PRODUCTS - Ultradent Products Inc | 256 | — | 1 |
| AS397459US | UPPER-ST-CLAIR-SCHOOL-DISTRICT - Upper St. Clair School District | 256 | — | 1 |
| AS53758US | INVALID-NETWORK - Invalid Network | 256 | 16 | 2 |
| AS14095US | HCMH-3-AS - Hugh Chatham Memorial Hospital, Inc. | 256 | — | 1 |
| AS18936US | GLENCOM - Glencom Systems Inc. | 256 | — | 1 |
| AS31854US | SAFETY-NATIONAL-CASUALTY-CORPORATION - Safety National Casualty Corporation | 256 | — | 1 |
| AS54419US | LIGHTPATH-PHOENIX - Cablevision Lightpath LLC | 256 | 1 | 2 |
| AS402223US | MLX-JYA-AS - MOLEX LLC | 256 | — | 1 |
| AS16587US | FECLRO9234 - Friday, Eldredge & Clark, LLP | 256 | — | 1 |
| AS402720US | CCSO-ASN-01 - Charlotte | 256 | — | 1 |
| AS30577US | CITY-OF-BELLEVUE - City of Bellevue IT Dept | 256 | — | 1 |
| AS400609US | LOOPHOLE-LABS - Loophole Labs, Inc. | 256 | — | 1 |
| AS26897US | EDF-MANCM - Marex Capital Markets, Inc. | 256 | — | 1 |
| AS398376US | SEPHORA-USA - Sephora USA Inc. | 256 | — | 1 |
| AS394238US | GCFA-ASN01 - GENERAL COUNCIL ON FINANCE AND ADMINISTRATION OF THE UNITED METHODIST CHURCH | 256 | — | 1 |
| AS400410US | DONNA-4 - Dona Ana County | 256 | — | 1 |
| AS27335US | BLUERIDGE-01 - Blueridge Capital, L.L.C. | 256 | — | 1 |
| AS26668US | SFCU-DC - Stanford Federal Credit Union | 256 | — | 1 |
| AS402619US | INTELOC - Inteloc | 256 | 256 | 2 |
| AS213007US | Puget-Sound-Networks-Lab Puget Sound Networks, LLC | 256 | 1 | 2 |
| AS32846US | MDP - MDP | 256 | — | 1 |
| AS393961US | FBB-INTERNET-ID - Farm Bureau Bank | 256 | — | 1 |
| AS401502US | AS-FALCON - Falcon (America) LLC | 256 | 256 | 2 |
| AS399207US | AM-AN-ASN-01 - ACCU-MOLD LLC | 256 | — | 1 |
| AS402440US | CYBERWOLF - Cyberwolf | 256 | 2 | 3 |
| AS63232US | EDL-MANAGER - EDL Manager, LLC | 256 | 1 | 2 |
| AS400472US | COMPANION-CORP - Companion Corporation | 256 | — | 1 |
| AS32518US | BMGL-AS - Just the News | 256 | 16 | 2 |
| AS395682US | MANKINNOCBNA - Mankin Media Systems, Inc | 256 | — | 1 |
| AS1852US | UCDC-NET - University of California - Office of the President | 256 | — | 1 |