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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 | 23,999 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,154 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 231 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,882 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,990 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,318 |
| 2.6K |
| 4.1K |
| 7 |
| AS395403US | NS1-INFRA - NSONE Inc | 2.6K | 17 | 27 |
| AS26470US | WPP-IT-PISCATAWAY - Group M Worldwide, LLC | 2.6K | 1 | 11 |
| AS4965US | AMER - Vision Bahn Corp | 2.6K | — | 10 |
| AS29706US | MIXEDSIGNAL - ExpressDial Internet Inc. | 2.6K | — | 3 |
| AS46653US | FREDRIKSON-BYRON - Fredrikson & Byron, P.A. | 2.6K | — | 6 |
| AS30016US | AS01-NATC-4-NA - North American Telecommunications Corporation | 2.6K | — | 10 |
| AS19878US | MEDIMPACT - MedImpact Healthcare Systems, Inc. | 2.6K | — | 8 |
| AS394772US | ALSAC - American Lebanese Syrian Associated Charities, Inc. | 2.6K | — | 4 |
| AS46903US | AS-RCH1-1 - Athenahealth | 2.6K | — | 4 |
| AS396892US | NSIADMIN - University of Indianapolis | 2.6K | — | 4 |
| AS8076US | HUD - Department of Housing and Urban Development | 2.6K | 2 | 12 |
| AS46370US | GRANDWEB - Grand Web Solutions, Inc. | 2.6K | — | 10 |
| AS398577US | SKANSKA-USA-EAST - SKANSKA USA INC | 2.6K | 1K | 4 |
| AS399753US | MINBURNAS - Minburn Communications | 2.6K | — | 3 |
| AS39987US | KISD-ORG - Kent Intermediate School District | 2.6K | — | 10 |
| AS399932US | TEKVLABS-0804 - Tekvizion PVS, Inc. | 2.6K | 1 | 5 |
| AS54650US | PWZCOM-AMA - Pathwayz Communications, Inc. | 2.6K | 65.5K | 11 |
| AS13968US | CAISO-NET-BLK - CALIFORNIA ISO | 2.6K | — | 10 |
| AS54769US | ENSEVA - Enseva LLC. | 2.6K | — | 10 |
| AS22966US | GOSHEN-COLLEGE - Goshen College | 2.6K | 1 | 4 |
| AS19155US | VYSTARCU - Vystar Credit Union | 2.6K | — | 3 |
| AS396922US | TGRID-AS - Cisco Systems, Inc. | 2.6K | 10 | 20 |
| AS1818US | DIALKENTUCKY - DIALOG TELECOMMUNICATIONS, INC. | 2.6K | — | 9 |
| AS62766US | SJBCOM-01 - SJB Communications | 2.6K | 16 | 4 |
| AS399869US | MTNBB - Visionary Communications LLC | 2.6K | — | 3 |
| AS394760US | SAUCESERVERSCORP-01 - Sauce Servers LLC | 2.6K | 256 | 10 |
| AS29897US | ATG-COMMUNICATIONS-LLC - ATG Communications, LLC | 2.6K | — | 7 |
| AS398836US | NP-NETWORKS - NP Wireless LLC | 2.6K | — | 10 |
| AS395177US | VFNLLC - Viaero Fiber Networks, LLC | 2.6K | — | 3 |
| AS11250US | TRI-STATE-G-AND-T - Tri-State Generation and Transmission Association Inc. | 2.6K | 256 | 11 |
| AS46266US | MARIANU-IN - Marian University | 2.6K | — | 2 |
| AS33633US | USG-CORPORATION - USG Corporation, Inc. | 2.6K | — | 5 |
| AS25940US | TIBCO - TIBCO Software Inc. | 2.6K | — | 10 |
| AS19950US | CBNEPTUNE-AS-19950 - CB Neptune Holdings, LLC | 2.6K | — | 9 |
| AS398059US | SUNY-PURCHASE - State University New York Purchase College | 2.6K | — | 7 |
| AS55189US | THRIVE-EAST2 - Thrive Operations, LLC | 2.6K | — | 9 |
| AS19625US | ZTVI - Metro Communications Company | 2.6K | 577 | 17 |
| AS31746US | FANDM - Franklin and Marshall College | 2.6K | — | 3 |
| AS13602US | I-EVOLVE-TECHNOLOGY-SERVICES-VTC - I-Evolve Technology Services | 2.6K | 4 | 14 |
| AS39942US | LIU-AS - Lincoln Intermediate Unit 12 | 2.6K | — | 7 |
| AS18491US | VTLA - NTT Global Networks Incorporated | 2.6K | — | 10 |
| AS396940US | HTH1 - HTH | 2.6K | — | 10 |
| AS30278US | EQUITYNET - Equity Residential | 2.6K | — | 8 |
| AS23222US | CHARTER-23222-RENO-C3 - Charter Communications LLC | 2.6K | 288 | 4 |
| AS32115US | WILLISTON FIBER - Williston Fiber | 2.6K | — | 2 |
| AS206286US | ONEOF1SERVERS 1 of 1 Servers Corp | 2.6K | — | 10 |