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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 | 24,358 |
| 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 | 4,342 |
| RELIANCE-01 - Reliance Standard Life Insurance Company |
| 768 |
| — |
| 3 |
| AS14475US | D4-NETW - D4 Networks L.L.C. | 768 | 3 | 6 |
| AS400418US | RIO-RANCHO-PUBLIC-SCHOOLS - Rio Rancho Public Schools | 768 | — | 3 |
| AS40812US | XTC-WIRELESS - XTC Limited Company | 768 | — | 3 |
| AS32988US | ANALOG DEVICES - Analog Devices, Inc. | 768 | — | 3 |
| AS400183US | RELIANCE-STEEL-AND-ALUMINUM-01 - Reliance Steel and Aluminum Co. | 768 | — | 3 |
| AS19888US | BAUSCH-ISTA - Bausch Health US, LLC | 768 | — | 3 |
| AS142561US | XTDEF-LIMITED-AS-AP - XTDEF Limited | 768 | 8 | 11 |
| AS3525US | ALBERTSONS - UNFI | 768 | — | 3 |
| AS18911US | MARKETFACTORY - Market Factory, Inc. | 768 | — | 3 |
| AS398542US | ONECHRONOS - OneChronos | 768 | — | 3 |
| AS14776US | YAHOO - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS1777US | SAINT-XAVIER-UNIVERSITY-CHICAGO - Saint Xavier University | 768 | — | 3 |
| AS26974US | BIGBYTECC - bigbyte.cc Corp | 768 | — | 3 |
| AS55163US | LINKEDIN - LinkedIn Corporation | 768 | 1 | 4 |
| AS26307US | HORACE-MANN-EDUCATORS-CORPORATION - Horace Mann Service Corporation | 768 | — | 3 |
| AS402722US | ARCTCLOUD - Arct | 768 | — | 3 |
| AS20171US | ASN-KEYWORDS-STUDIOS - Keywords Studios US INC. | 768 | — | 2 |
| AS63130US | NATIONAL-LOUIS-UNIVERSITY - National-Louis University | 768 | — | 3 |
| AS395333US | LACKAWANNA-COLLEGE - Lackawanna College | 768 | — | 3 |
| AS18849US | RICHESIN-ENG - Richesin Engineering, LLC | 768 | 65.5K | 3 |
| AS399450US | ADVANCIAL-ASN01 - ADVANCIAL FEDERAL CREDIT UNION | 704 | — | 4 |
| AS396155US | COA - City of Arlington | 640 | — | 3 |
| AS23459US | APPLEBEE-NETWORKS - applebee | 640 | 3 | 6 |
| AS53719US | MAINSTREAM-TECHNOLOGIES-LRDC - Mainstream Technologies, Inc. | 640 | — | 3 |
| AS25895US | HART-AS1 - HART | 576 | — | 4 |
| AS18718US | MARVELL - Marvell Semiconductor Inc. | 576 | — | 4 |
| AS11317US | GPN - Great Plains Network | 544 | 64 | 3 |
| AS395351US | AG-1 - Advisor Group, Inc. | 544 | — | 3 |
| AS14252US | SCHOOLSPECIALTY - School Specialty, Inc. | 544 | — | 3 |
| AS26812US | ROTARY-INTERNATIONAL - Rotary International | 528 | — | 3 |
| AS396049US | EDNETICS - Ednetics, Inc. | 513 | 4.1K | 10 |
| AS3043US | IMS - Amphibian Media Corporation | 512 | 65.5K | 3 |
| AS401237US | CVR-ENERGY - CVR Services, LLC | 512 | — | 1 |
| AS33468US | EOJ1 - Locknet | 512 | — | 2 |
| AS399222US | NEWCOM-01 - NEWCOM, INC | 512 | — | 2 |
| AS401687US | AMNS CALVERT - AM/NS Calvert LLC | 512 | — | 2 |
| AS394964US | MARTINMARIETTA-AS1 - Martin Marietta Inc. | 512 | — | 2 |
| AS394032US | CD-MKE-AS1 - Capital Data Inc | 512 | — | 2 |
| AS35868US | HERMETEK-AS-01 - HermeTek LLC | 512 | — | 2 |
| AS17388US | HOVERNET-AS - Hover Networks, Inc. | 512 | — | 2 |
| AS1974US | MEHEALTH-SOUTH - Southern Maine Medical Center | 512 | — | 2 |
| AS32438US | GRO-UCFUSM-1N - Michigan State University Federal Credit Union | 512 | — | 2 |
| AS26576US | WEBHIWAY-01 - Webhiway Communications LLC | 512 | 4.1K | 3 |
| AS36517US | AS-UGIUTIL - UGI Utilities Inc. | 512 | — | 2 |
| AS399615US | OCU-ASN01 - ORIX Corporation USA | 512 | — | 2 |
| AS22482US | AS22482 - Station Casinos, LLC. | 512 | — | 2 |