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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| 16 |
| 2 |
| AS18646US | BITMAX - Bitmax, Inc. | 512 | 1 | 3 |
| AS397133US | USG-NPE-WEST01 - ULTIMATE SOFTWARE GROUP | 512 | — | 2 |
| AS397419US | OREGON-STATE-LOTTERY - Oregon State Lottery | 512 | — | 2 |
| AS13849US | BLOCKINETIC - Blockinetic LLC | 512 | 4.1K | 3 |
| AS20182US | ESSENTGTY001 - ESSENT GUARANTY, INC. | 512 | 17 | 4 |
| AS17032US | QUALCOMM-QWBS-SD - Qualcomm, Inc. | 512 | — | 2 |
| AS401855US | FTOP - Maximize Marketing Agency, Inc. | 512 | — | 2 |
| AS11128US | BERRY-2-ASN - Berry College | 512 | — | 2 |
| AS54391US | CRUTCHFIELD - Crutchfield New Media LLC | 512 | 2 | 4 |
| AS54236US | PPPA-ASN - Pacific Press Publishing Association, Inc | 512 | — | 2 |
| AS400012US | YISD-COLO-500 - Ysleta Independent School District | 512 | — | 2 |
| AS32344US | CSD99 - Community High School District 99 | 512 | — | 2 |
| AS19521US | AS-EPOXYTEL-US - Epoxytel Networks LLC | 512 | 1 | 3 |
| AS64213US | AS-ERCELITE - ERC Broadband | 512 | 1 | 3 |
| AS40907US | ATL-699-40907 - Access TeleCare, LLC | 512 | 2 | 4 |
| AS26372US | VERMONTINFORMATION - Vermont Information Processing | 512 | — | 2 |
| AS36298US | INFOCISION - InfoCision Management Corporation | 512 | — | 2 |
| AS33014US | MARLINLEASING - MARLIN LEASING CORPORATION | 512 | 1 | 3 |
| AS394275US | PARALLELS - Parallels Inc | 512 | — | 1 |
| AS63248US | USRC-AS63248 - U.S. RENAL CARE, INC. | 512 | — | 2 |
| AS395037US | ASSFG01 - Sammons Financial Group, Inc. | 512 | — | 2 |
| AS46138US | MAIKIWI-COMPANY-AS - Maikiwi Network LLC | 512 | 1 | 3 |
| AS17124US | SOUTHARK - SouthArk | 512 | — | 2 |
| AS396279US | WASHINGTONELECTRIC-AS-1 - WASHINGTON ELECTRIC COOPERATIVE, INC. | 512 | 2 | 4 |
| AS401739US | REDLUFF-NET01 - RedLuff, LLC | 512 | — | 2 |
| AS27604US | SETONHILLUNIVERSITY - Seton Hill University | 512 | — | 1 |
| AS54266US | ABCFINANCIAL - ABC Financial Services, Inc. | 512 | — | 2 |
| AS22754US | GAPARTNERS-CT - General Atlantic Service Corp. | 512 | — | 2 |
| AS16719US | NASD - Financial Industry Regulatory Authority, Inc. | 512 | — | 2 |
| AS26378US | ADORAMA - ADORAMA | 512 | — | 2 |
| AS32109US | REDDOTNET-USA - Reddot Networks Inc. | 512 | 4.1K | 3 |
| AS25785US | REDL-1 - Real Estate Digital LLC | 512 | — | 2 |
| AS396538US | NORTHSITE-DATA - Northsite Data, LLC | 512 | — | 1 |
| AS399238US | WELLS-NV-BEEHIVE - Satview Broadband LTD | 512 | — | 2 |
| AS395442US | HERITAGEBANK - Heritage Bank | 512 | — | 2 |
| AS401575US | JPPS-01 - Jeff Parrish, Sole Proprietorship | 512 | 256 | 3 |
| AS18583US | HATTERASCPC - Hatteras CPC | 512 | — | 2 |
| AS19691US | 888-US - 888 US Inc. | 512 | — | 2 |
| AS397827US | ALLEGACY - ALLEGACY FEDERAL CREDIT UNION | 512 | — | 2 |
| AS19860US | OPTIV-US-AS1 - OPTIVER US LLC | 512 | — | 2 |
| AS25916US | FREEMAN-COMPANIES - The Freeman Companies | 512 | — | 2 |
| AS32886US | NYC-INTERPUBLIC - THE INTERPUBLIC GROUP OF COMPANIES, INC. | 512 | — | 2 |
| AS29656US | CCBILL-EU PHOENIX NAP, LLC. | 512 | — | 2 |
| AS25836US | STERLING-JEWELERS - Sterling Jewelers Inc. | 512 | — | 2 |
| AS46802US | GLADIATOR-TECH - Gladiator Technologies, LLC | 512 | — | 2 |
| AS36054US | GLG-AS---GERSON-LEHRMAN-GROUP - Gerson Lehrman Group, Inc. | 512 | — | 2 |