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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 |
| 256 |
| — |
| 1 |
| AS46170US | BASTION-CYBER-US01 - bastioncyber.ai | 256 | 1 | 2 |
| AS2538US | IBM-PLP - IBM | 256 | — | 1 |
| AS402173US | SCHENANIGANS-01 - I Need Help Alliance | 256 | 5 | 6 |
| AS401274US | AWSOM - Alice L. Walton School of Medicine | 256 | — | 1 |
| AS393530US | TLU - TEXAS LUTHERAN UNIVERSITY | 256 | — | 1 |
| AS202397US | nexeon Nexeon Technologies, Inc. | 256 | — | 1 |
| AS399255US | NORTHWEST-OHIO-BROADBAND-LLC - NORTHWEST OHIO BROADBAND, LLC | 256 | — | 1 |
| AS7754US | MCAFEE - McAfee, LLC | 256 | — | 1 |
| AS401408US | SALADCLOUD - Salad Technologies, Inc. | 256 | 256 | 2 |
| AS36077US | MEMC-1 - Mitchell Electric Membership Corporation | 256 | 1 | 2 |
| AS31980US | BAUPOST - The Baupost Group, LLC | 256 | — | 1 |
| AS26371US | SWMC - Peace Health | 256 | — | 1 |
| AS40489US | ALMOCORP - ALMO Corporation | 256 | — | 1 |
| AS213154US | DAVIDC David Costantino | 256 | 19 | 5 |
| AS398937US | FIBERCREEK - Fibercreek Networks, LLC | 256 | — | 1 |
| AS36422US | STERLING-TRADING-TECH-CHI - STT Acquisition Intermediate Holdco, Inc. | 256 | — | 1 |
| AS398639US | WHV - Warm Hearth Inc | 256 | — | 1 |
| AS393866US | SEGAS-01 - Southeast Gas | 256 | — | 1 |
| AS26886US | CLOUDOWNER-01 - cloudowner llc | 256 | 1 | 2 |
| AS400089US | KIRKLAND-ELLIS-SL - Kirkland & Ellis LLP | 256 | — | 1 |
| AS393473US | BURRIS-LOGISTICS - Burris Logistics | 256 | — | 1 |
| AS63301US | GSR-ARIN-01 - MEI-GSR Holdings, LLC | 256 | — | 1 |
| AS30646US | BBNA-AS1 - BlueScope Buildings North America, Inc. | 256 | — | 1 |
| AS23301US | WISC-INVESTMENT-BOARD - State of Wisconsin Investment Board | 256 | — | 1 |
| AS12029US | AS12029 - TenSpire Network | 256 | — | 1 |
| AS402331US | NWT-030 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS394483US | DSS - Doyle Security Systems, Inc. | 256 | — | 1 |
| AS63316US | CITY-OF-FOSTER-CITY - City of Foster City | 256 | — | 1 |
| AS14870US | FLEXERA-SC4 - Flexera Software, LLC | 256 | — | 1 |
| AS26535US | AMDA - American Musical & Dramatic Academy Inc. | 256 | — | 1 |
| AS27187US | INDIANA-RMC - Indiana Regional Medical Center | 256 | — | 1 |
| AS2020US | ADHESIVE-ASN - Adhesives Research, Inc. | 256 | — | 1 |
| AS398222US | CITY-OF-WPB - City of West Palm Beach | 256 | 1 | 2 |
| AS402256US | SEAN-LAB-01 - Sean Johns, Sole Proprietorship | 256 | 3 | 4 |
| AS46643US | VIRGINIA-COLLEGE-SAVINGS-PLAN - Virginia College Savings Plan | 256 | — | 1 |
| AS36744US | ELYSIA - Valex Cloud LLC | 256 | 16 | 2 |
| AS400181US | SIGYN-SYSTEMS-0 - Sigyn Systems | 256 | 4.1K | 2 |
| AS29759US | OXFORD-INDUSTRIES - Oxford Industries | 256 | — | 1 |
| AS36357US | AS36357 - EnTrust Global | 256 | — | 1 |
| AS40876US | CITYOFLARGO-01 - City of Largo | 256 | — | 1 |
| AS18981US | SUPERNET-II - SUPERNet II | 256 | — | 1 |
| AS40159US | PRINCETON-REGIONAL-SCHOOLS - Princeton Public Schools | 256 | — | 1 |
| AS399636US | ITHAKA-AS-AA2 - ITHAKA Harbors, Inc. | 256 | — | 1 |
| AS32790US | PACIOLAN-INC - Paciolan, LLC | 256 | — | 1 |
| AS16835US | CENTURYLINK-LEGACY-MR-MEBLANE-AND-RCMT - CenturyLink Communications, LLC | 256 | — | 1 |
| AS4890US | ASN-RICHLINE-FL - Richline Group Inc | 256 | — | 1 |