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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 | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| — |
| 1 |
| AS399422US | UNIVERSAL-HOLDINGS - Universal Insurance Holdings, Inc. | 256 | — | 1 |
| AS396954US | ZSS - The Root Group, Inc. | 256 | — | 1 |
| AS21935US | EPSILONDATA50 - Epsilon Data Management LLC | 256 | — | 1 |
| AS401357US | SOLID-ROCK-NETWORK - Solid Rock Network LLC | 256 | 256 | 2 |
| AS16665US | JIBEI-FLUSHING - Joint Industry Board of the Electrical Industry | 256 | — | 1 |
| AS15099US | MONROE-COUNTY-MI-PUBLIC-ASN - County of Monroe | 256 | — | 1 |
| AS402691US | SEL01 - Solar | 256 | 4.1K | 3 |
| AS18981US | SUPERNET-II - SUPERNet II | 256 | — | 1 |
| AS22679US | M2OS-ASN-01 - m2os LLC | 256 | 4.1K | 2 |
| AS63441US | AS63441 - Crown Castle Fiber LLC | 256 | — | 1 |
| AS397424US | WAM-ASN-01 - Weiss Asset Management LP | 256 | — | 1 |
| AS32486US | CBSBANK - CB&S Bank, Inc. | 256 | — | 1 |
| AS26502US | MOMEN-5-ASN - Momentum Telecom, Inc. | 256 | — | 1 |
| AS23245US | EADS-NORTH-AMERICA--AS01 - Airbus Defense and Space, Inc. | 256 | — | 1 |
| AS396102US | JACKSONVILLE - Formativ Health | 256 | — | 1 |
| AS399669US | FR-CORP-USS-SURF - Forest River, Inc. | 256 | — | 1 |
| AS136560US | MCDAPASN01-AS-AP - McDonald's Corporation | 256 | — | 1 |
| AS53747US | WSSD-1-ASN - Wall Street Systems Delaware, Inc | 256 | — | 1 |
| AS11407US | CPSD6 - Central Point School District 6 | 256 | — | 1 |
| AS53476US | NDBH - New Directions Behavioral Health, LLC | 256 | — | 1 |
| AS11934US | ESL63 - Enom Solutions LLC | 256 | — | 1 |
| AS16385US | CESG-16385 - COWEN EXECUTION SERVICES LLC. | 256 | — | 1 |
| AS23120US | LEGACY-OKC-ASN - Legacy | 256 | — | 1 |
| AS11511US | CRETE-INTERNET - Crete Carrier Corporation | 256 | 1 | 2 |
| AS17180US | MFS-TKY - Massachusetts Financial Services | 256 | — | 1 |
| AS36726US | ARROW-INTERNATIONAL - Arrow International Inc. | 256 | 1 | 2 |
| AS398746US | HARRIS-AS-01 - HARRIS & HARRIS, LTD. | 256 | — | 1 |
| AS396159US | PUD3-WA - PUD3 | 256 | — | 1 |
| AS23087US | CDG - Communications Data Group | 256 | — | 1 |
| AS33615US | EVHC - Envision Healthcare Holdings, Inc | 256 | — | 1 |
| AS54724US | GAITHERSBURGMDGOV - City of Gaithersburg | 256 | — | 1 |
| AS396114US | GENERAL-ASN - SEARHC | 256 | — | 1 |
| AS400071US | SIMON-TEL-AS - Simon Telephonics | 256 | 1 | 2 |
| AS40781US | WINT-PHILLY - Wintsec Technologies, LLC | 256 | — | 1 |
| AS53729US | GESA-CU-ASN - Gesa Credit Union | 256 | — | 1 |
| AS26886US | CLOUDOWNER-01 - cloudowner llc | 256 | 1 | 2 |
| AS399919US | AS-ALOMERE-HEALTH - Alomere Health | 256 | — | 1 |
| AS55087US | BRAZOS-ASN-1 - Brazos County | 256 | — | 1 |
| AS62920US | PRAIRIEPOWER - Prairie Power, Inc. | 256 | — | 1 |
| AS402274US | ZENNET - ZenNet LLC | 256 | — | 1 |
| AS397963US | DSD2 - Dallas School District No. 2 | 256 | — | 1 |
| AS395757US | SCCFCU-PUBLIC01 - Santa Clara County Federal Credit Union | 256 | — | 1 |
| AS396165US | SAC - BLUE DIAMOND GROWERS | 256 | — | 1 |
| AS22590US | SKAGIT-COUNTY-PHD-2-WA - Island Health | 256 | — | 1 |
| AS54331US | NVRH - NORTHEASTERN VERMONT REGIONAL HOSPITAL, INC. | 256 | — | 1 |
| AS397850US | CMHSHEALTH - Community Memorial Health System | 256 | — | 1 |