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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 | 24,346 |
| 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 | 4,357 |
| 512 |
| — |
| 1 |
| AS398919US | HCBOCC-AS - Hillsborough County Board of Commissioners | 512 | — | 2 |
| AS216435US | PLIMMOBILE-AS Plim Mobile Telecom LLC | 512 | 8.5K | 39 |
| AS15349US | AS-NJ1-DIA - Guggenheim Services LLC | 512 | — | 2 |
| AS396882US | N3XTWORK - N3XTWORK LLC | 512 | — | 2 |
| AS36366US | LOGIXCOMM-AS5 - Logix | 512 | — | 2 |
| AS27583US | REGISCORP - Regis Corporation | 512 | — | 2 |
| AS400086US | OUHBGPAS1 - OU Medicine, Inc. | 512 | — | 1 |
| AS17237US | WPG-CONSULT - Walsh Patel Group Consulting, LLC | 512 | — | 2 |
| AS394819US | NOST-EAST - NNSA Office Of Secure Transportation | 512 | — | 2 |
| AS400211US | PORT80 - Port 80 | 512 | 65.5K | 3 |
| AS396358US | BUBGP1 - Bellarmine University | 512 | — | 2 |
| AS62974US | OOCL-SLC - OOCL (USA) Inc. | 512 | — | 2 |
| AS402164US | ROFAEL-01 - Rofael Aleezada, Sole Proprietorship | 512 | 1 | 3 |
| AS46137US | AAA-MWG-IO - AAA-Arizona, Inc. | 512 | — | 2 |
| AS27303US | TGNA-WMAZ - TEGNA Inc. | 512 | — | 2 |
| AS12163US | AMHERST-HOLDINGS - Amherst Holdings LLC | 512 | — | 2 |
| AS398722US | CENSYS-ARIN-03 - Censys, Inc. | 512 | 2 | 4 |
| AS49427US | NETRC NETRC LLC | 512 | — | 2 |
| AS399809US | LAER-AS-FRA1 - UnitedLayer, LLC | 512 | 1 | 3 |
| AS402453US | WEALTH - Wealth | 512 | — | 2 |
| AS396439US | HCAA-ASN01 - Hillsborough County Aviation Authority | 512 | — | 2 |
| AS36851US | DIALINTERNET - DialAmerica Marketing, Inc | 512 | — | 2 |
| AS394730US | LEADFUSION - Leadfusion, Inc. | 512 | — | 1 |
| AS398005US | TGNA-WATN - TEGNA Inc. | 512 | — | 2 |
| AS395989US | DAYSTAR-3901 - Daystar Television Network | 512 | — | 2 |
| AS395849US | OXIDE - Oxide Computer Company | 512 | 1 | 3 |
| AS33573US | BAQMD-SF - Bay Area Air Quality Management District | 512 | — | 2 |
| AS23227US | NIKON - Nikon, Inc. | 512 | — | 2 |
| AS394697US | VSLR - Vivint Solar | 512 | — | 1 |
| AS26148US | CSMPR - Cooperativa de Seguros Multiples de Puerto Rico | 512 | — | 2 |
| AS23042US | SJRMC-ASN - San Juan Regional Medical Center Inc. | 512 | — | 2 |
| AS36232US | NEXTGI - Nextgi, LLC. | 512 | 1 | 3 |
| AS19193US | SPIDERROCK-GW - SPIDERROCK HOLDINGS, LLC | 512 | — | 2 |
| AS400774US | NATURALWIRELESS - Natural Wireless, LLC | 512 | — | 1 |
| AS33463US | CITIGROUP-GLOBAL-ANYCAST-DNS - Citigroup Inc. | 512 | — | 2 |
| AS40471US | INCYTECORP - Incyte Corporation | 512 | — | 2 |
| AS62494US | YELLOWSTONE-FIBER - UTOPIA | 512 | 1 | 2 |
| AS62634US | NGP-TELENETWORKS - NGP Telenetworks, Inc. | 512 | — | 1 |
| AS208188US | PSNL-208188 - Puget Sound Networks, LLC | 512 | 2 | 4 |
| AS35008US | KERFUFFLE - Kerfuffle, LLC | 512 | 257 | 4 |
| AS64257US | TXGL1 - trueEX LLC | 512 | — | 2 |
| AS22337US | DTBNET - DVS Solutions | 512 | — | 1 |
| AS32099US | NYSOAG-AS - New York State Office of the Attorney General | 512 | — | 2 |
| AS54018US | EG-USWEST - EXPEDIA, INC | 512 | — | 2 |
| AS393414US | KIRKLAND-ELLIS-UK - Kirkland & Ellis LLP | 512 | — | 2 |
| AS20416US | PRYSMIAN-01 - Prysmian Cables and Systems USA LLC | 512 | — | 1 |