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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| — |
| 2 |
| AS46361US | GILLETTE-CHILDRENS-SPECIALTY-HEALTHCARE - Gillette Children's Specialty Healthcare | 512 | — | 2 |
| AS398985US | CITY-OF-ARVADA - City of Arvada | 512 | — | 2 |
| AS63329US | MARCUM-LLP - Marcum LLP | 512 | — | 2 |
| AS32052US | SULLCROM - SULLCROM | 512 | — | 2 |
| AS33014US | MARLINLEASING - MARLIN LEASING CORPORATION | 512 | 1 | 3 |
| AS397633US | WWE-CORP - WWE | 512 | — | 2 |
| AS33419US | TRIBAL-FUSION - Exponential Interactive, Inc. | 512 | — | 2 |
| AS63248US | USRC-AS63248 - U.S. RENAL CARE, INC. | 512 | — | 2 |
| AS399658US | CH3 - Guaranteed Rate Inc | 512 | — | 2 |
| AS400926US | KIWI-TELECOM-01 - KIWI TELECOM | 512 | — | 2 |
| AS397827US | ALLEGACY - ALLEGACY FEDERAL CREDIT UNION | 512 | — | 2 |
| AS30704US | WC-1162 - WellSky Corporation | 512 | — | 2 |
| AS19670US | CUSTOMCOMPUTERSPECIALISTS - Custom Computer Specialists, Inc. | 512 | — | 2 |
| AS63165US | CCPS-17ASN - Clayton County Public Schools | 512 | — | 2 |
| AS46787US | RXLINC-INC - RXLINC LLC | 512 | — | 2 |
| AS1446US | TPC-1 - Tutor Perini Corporation | 512 | — | 2 |
| AS396109US | YOKO-NETWORKS - Yoko Networks Inc. | 512 | — | 2 |
| AS36575US | WCVB-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS40347US | EAUCLAIRE-COUNTY - Eau Claire County | 512 | — | 1 |
| AS36152US | DAKTRONICS-CORP-ASN-63-85-214-0 - Daktronics | 512 | 256 | 3 |
| AS394805US | RELIAQUEST - ReliaQuest, LLC | 512 | — | 2 |
| AS395430US | COO - City of Oakland | 512 | — | 2 |
| AS1077US | ACTIVEPURE-TECH-01 - ActivePure Technologies, LLC | 512 | — | 2 |
| AS32526US | CATALYSTCLOUD - CatalystVM LLC | 512 | — | 2 |
| AS53858US | BAYCARE-HEALTH-SYSTEM - Baycare Health System, Inc. | 512 | — | 1 |
| AS11932US | EDF-MAN-CAPITAL-INC - Breakwater | 512 | — | 2 |
| AS40889US | GREYSTONE - Greystone IT, Inc. | 512 | — | 2 |
| AS398863US | WHITECAP - White Cap Construction Supply | 512 | — | 2 |
| AS33496US | ISC - ISC CONSTRUCTORS, LLC | 512 | 1 | 3 |
| AS62918US | ASTM-INTL - American Society for Testing and Materials - ASTM | 512 | — | 2 |
| AS18646US | BITMAX - Bitmax, Inc. | 512 | 1 | 3 |
| AS393355US | SISA - SAMSUNG RESEARCH AMERICA, INC. | 512 | — | 2 |
| AS23156US | VG-NET-01 - The Vincit Group | 512 | — | 2 |
| AS47010US | LG-03279 - Liggett Group LLC | 512 | — | 2 |
| AS393864US | PRESTIGE-BROADBAND - Prestige Broadband LLC | 512 | — | 2 |
| AS398053US | COMPENTERPRISE - Comporium, Inc | 512 | — | 2 |
| AS396017US | COMCAST-MES - Comcast Cable Communications, LLC | 512 | — | 2 |
| AS400444US | MAGNERA-NA1 - Magnera Corporation | 512 | — | 2 |
| AS395442US | HERITAGEBANK - Heritage Bank | 512 | — | 2 |
| AS401900US | PROCIRRUS - PROCIRRUS TECHNOLOGIES, INC | 512 | — | 2 |
| AS1544US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | 512 | — | 2 |
| AS46218US | COMPORIUM-AS-2 - Comporium, Inc | 512 | 65.5K | 6 |
| AS25758US | MEI - MIDWEST EXPRESS INC | 512 | — | 2 |
| AS13971US | FDS-AS-NY - HedgeServ Corporation | 512 | — | 2 |
| AS32454US | PRESIDENTIAL-PRAYER-TEAM - The Presidential Prayer Team, Inc. | 512 | — | 2 |
| AS394358US | SECU-1 - State Employees' Credit Union | 512 | — | 2 |