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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 512 |
| — |
| 2 |
| AS393668US | STATEFAIRCC - State Fair Community College | 512 | 32 | 19 |
| AS15020US | AS-BANDITO - Bandito Networks, Inc | 512 | 3 | 5 |
| AS33756US | CHC-ASN-A - The Children's Hospital Corporation | 512 | 256 | 2 |
| AS32854US | PCTCU-ASN - Achieva Credit Union | 512 | — | 2 |
| AS22633US | FISHERBROTHERS - Fisher Brothers | 512 | — | 2 |
| AS401338US | NYCRE-ALB - NY CREATES | 512 | — | 1 |
| AS401802US | KANTIME-01 - KanTime | 512 | — | 2 |
| AS19858US | GENSLER - M. Arthur Gensler Jr. & Associates, Inc. | 512 | — | 2 |
| AS33461US | COMMUNITY-FOUNDATION-OF-NORTHWEST-INDIANA - COMMUNITY FOUNDATION OF NW INDIANA | 512 | — | 2 |
| AS22270US | BANGOR-SAVINGS-BANK - Bangor Savings Bank | 512 | — | 2 |
| AS399480US | TI-GARLAND-QX-HUB - Texas Instruments Incorporated | 512 | — | 2 |
| AS395976US | COMCAST-MES - Comcast Cable Communications, LLC | 512 | — | 2 |
| AS55154US | MADGEN-01 - Madgenius.com | 512 | — | 2 |
| AS32041US | UL - Underwriters Laboratories | 512 | — | 2 |
| AS401156US | MCB - Metropolitan Commercial Bank | 512 | — | 2 |
| AS394612US | UPMC-PINNACLE - UPMC | 512 | — | 2 |
| AS395824US | BEPCOLP - Bepco, L.P. | 512 | — | 2 |
| AS19188US | SJ-ARMANINO-01 - Armanino LLP | 512 | — | 2 |
| AS19733US | DCU-LCO1 - Digital Federal Credit Union | 512 | — | 2 |
| AS36513US | BRETSA - BRETSA | 512 | — | 2 |
| AS30061US | WINSUPPLY-INC - Winsupply Inc. | 512 | — | 2 |
| AS7818US | ASN-QUEENCREEK - Town of Queen Creek | 512 | — | 2 |
| AS207439US | KORVESNET Korves.Net USA LLC | 512 | 524.3K | 3 |
| AS398125US | EXODUSPOINT-CAPITAL-MANAGEMENT-US - ExodusPoint Capital Management, L.P. | 512 | — | 2 |
| AS46895US | CSGN - CSG Systems Inc. | 512 | — | 2 |
| AS20236US | BEAL-SERVICE-CORPORATION - Beal Service Corporation | 512 | — | 2 |
| AS14508US | THEMASCHHOFFS - The Maschhoffs, LLC | 512 | — | 2 |
| AS824US | GLAXOSMITHKLINE - GlaxoSmithKline | 512 | — | 1 |
| AS47094US | ITRON-6-47094 - Itron | 512 | — | 2 |
| AS393746US | MAXHOST-IO - Amazing Creations and More LLC | 512 | 5 | 7 |
| AS399462US | SUMOFIBER-TEXAS - Sumofiber | 512 | — | 2 |
| AS12168US | DANAONMISSIONBAY-GUEST-INTERNET - The Dana On Mission Bay | 512 | — | 1 |
| AS22064US | AS22064-FXALL - Refinitiv US LLC | 512 | — | 2 |
| AS401320US | GLOBALISER - Globaliser, Inc. | 512 | 1 | 3 |
| AS396160US | ROYAL-REALITY-CORP - Royal Realty Corp. | 512 | — | 2 |
| AS400835US | MIDD-ASN-01 - Middleby Corp | 512 | — | 2 |
| AS26283US | SFCU-AS1 - SchoolsFirst Federal Credit Union | 512 | — | 2 |
| AS218613US | BOCCHI-SH Bocchi Network LLC | 512 | 1 | 3 |
| AS402091US | AYIT-01 - oknumbers inc | 512 | — | 2 |
| AS33759US | REGENERON - Regeneron Pharmaceuticals Inc. | 512 | — | 2 |
| AS11328US | BIO-RAD-ASN - Bio-Rad Laboratories, Inc. | 512 | — | 2 |
| AS13478US | BEAGLE - Beagle Networks | 512 | — | 2 |
| AS13454US | PA-TURNPIKE - PENNSYLVANIA TURNPIKE COMMISSION | 512 | — | 2 |
| AS53284US | SR-TELECOM - Standing Rock Telecom | 512 | — | 2 |
| AS13740US | HYPERNET-AS - 1stel, Inc. | 512 | — | 2 |
| AS20052US | ARBOR - Arbor Networks, Inc. | 512 | — | 1 |