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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 |
| SLG - SL Green Realty Corp |
| 256 |
| — |
| 1 |
| AS54283US | FCU-IN - FORUM Credit Union | 256 | — | 1 |
| AS208462US | BISUP COSMIC STORE LLC | 256 | — | 1 |
| AS23087US | CDG - Communications Data Group | 256 | — | 1 |
| AS394018US | ARIN-PFS-SEA - ARIN Operations | 256 | 1 | 2 |
| AS22551US | MOA-192-206-58-0 - Municipality of Anchorage | 256 | — | 1 |
| AS53470US | FAYETTECO-TX - Fayette County, Texas | 256 | — | 1 |
| AS400553US | SUPERCORE - SuperCore LLC | 256 | — | 1 |
| AS27175US | ATNETHOST-AS02 - AtNetHost LLC | 256 | — | 1 |
| AS20327US | FORBES-COM - Forbes.com | 256 | — | 1 |
| AS397091US | LASERFICHE-ASN-01 - Laserfiche | 256 | — | 1 |
| AS402709US | CPASNET4 - Centerview | 256 | — | 1 |
| AS394596US | CITYOFSANTAPAULA-CA - City of Santa Paula | 256 | — | 1 |
| AS26868US | NCTA-WASHINGTONDC - NCTA - The Internet & Television Association | 256 | 1 | 2 |
| AS54405US | MGALE-1 - Martingale Asset Management Limited Partnership | 256 | — | 1 |
| AS401473US | MKSYS - Marcus Systems, LLC | 256 | 256 | 2 |
| AS402414US | NWCUD-ASN-01 - Northwest | 256 | 65.5K | 2 |
| AS398856US | WPP-DETROIT - Group M Worldwide, LLC | 256 | — | 1 |
| AS25603US | NATIONWIDE-MUTUAL-INSURANCE-COMPANY - Nationwide Mutual Insurance Company | 256 | — | 1 |
| AS395751US | DRAD-ASNET - DESERT RADIOLOGISTS | 256 | — | 1 |
| AS400208US | SKAGIT911-ASN-NO - Skagit 911 | 256 | — | 1 |
| AS36434US | EPPLP - Enterprise Products Company | 256 | — | 1 |
| AS32171US | TRIAN-FUND-MANAGEMENT-LP - Trian Fund Management L.P. | 256 | — | 1 |
| AS54530US | SPRINGFIELD-PUBLIC-SCHOOL-MA - Springfield Public Schools | 256 | 256 | 2 |
| AS40909US | FUNDAMENTAL-ADVISORS-ASN - Fundamental Advisors LP | 256 | — | 1 |
| AS19770US | PHOENIXCONTACTSERVICES-US - Phoenix Contact Services, Inc. | 256 | 1 | 2 |
| AS40099US | BB1-AS01 - Broadband One of the Midwest, Inc. | 256 | — | 1 |
| AS19642US | CONNEL-FOLEY - Connell Foley LLP | 256 | — | 1 |
| AS403102US | SLEEPTIME-NETWORK - Dreamstation | 256 | 1 | 2 |
| AS20190US | AS20190 - 1-800-Flowers.com, Inc. | 256 | — | 1 |
| AS7060US | EA - Electronic Arts, Inc. | 256 | — | 1 |
| AS27523US | KAWAII-NETWORKS - Kawaii Networks LLC | 256 | 535 | 11 |
| AS399437US | LUZERNE-IT-ASN - Luzerne County | 256 | — | 1 |
| AS396912US | CEICMHA - Community Mental Health Authority of Clinton-Eaton-Ingham Counties | 256 | 256 | 2 |
| AS27511US | PUNAHOU - Punahou School | 256 | — | 1 |
| AS25987US | WESTCHESTER-LIBRARY - Westchester Library System | 256 | — | 1 |
| AS210659US | RLRISK Rogers and Lynch LLC | 256 | 16 | 2 |
| AS16665US | JIBEI-FLUSHING - Joint Industry Board of the Electrical Industry | 256 | — | 1 |
| AS53592US | KEPOS - Kepos Capital LP | 256 | — | 1 |
| AS23325US | MCL-ASN - Magnitude Capital, LLC | 256 | — | 1 |
| AS14950US | LHM-GROUP - Larry H. Miller Dealerships | 256 | — | 1 |
| AS397841US | 5150 - New Mexico Orthopaedics Associates PC | 256 | — | 1 |
| AS16969US | NEFEC-ASN01 - North East Florida Educational Consortium (Putnam County School District) | 256 | — | 1 |
| AS400327US | VIDVITA-USA-PA1 - VidVita LLC | 256 | — | 1 |
| AS397082US | ASRC - Arctic Slope Regional Corporation | 256 | — | 1 |
| AS400455US | PH-HQ - PowerHouse | 256 | — | 1 |
| AS393887US | BIAMP-HQ - Biamp Systems, LLC | 256 | — | 1 |