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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 | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| — |
| 1 |
| AS26098US | GAA - Greensboro Auto Auction | 256 | — | 1 |
| AS16627US | BCCA-AS - Board of Commissioners of the County of Allen | 256 | — | 1 |
| AS63198US | JCSO-ASN - Jefferson County Sheriff's Office | 256 | — | 1 |
| AS401709US | EVERYONE-BANDWIDTH-IN - Abc-Hosters LLC | 256 | — | 1 |
| AS15097US | FFF-AS - FFF Enterprises, Inc | 256 | — | 1 |
| AS402290US | ACSCGOV - Anderson County | 256 | — | 1 |
| AS398366US | LINKUP - Linkup Communications Corporation | 256 | — | 1 |
| AS398556US | MCDUSASN01 - McDonald's Corporation | 256 | — | 1 |
| AS18512US | YBP-AS - Yankee Book Peddler | 256 | — | 1 |
| AS13715US | USL-ASN - Upsher-Smith Laboratories Inc. | 256 | — | 1 |
| AS20027US | MARTIGNETTI-AS - MARTIGNETTI COMPANIES | 256 | — | 1 |
| AS401102US | WATCHFIRE-HQ-ASN-1 - Watchfire | 256 | — | 1 |
| AS55207US | IGLOO - June Slater | 256 | 2 | 3 |
| AS396895US | UMA-COLO - UMA Education, Inc. | 256 | — | 1 |
| AS46820US | LRHNET1 - Littleton Regional Hospital | 256 | — | 1 |
| AS396978US | ORANGE-WATER-SEWER-AUTHORITY - Orange Water and Sewer Authority | 256 | 1 | 2 |
| AS33103US | OPENMARKET-INC-2 - Infobip | 256 | — | 1 |
| AS20450US | THL16-ASN - Trojan Hosting, LLC. | 256 | — | 1 |
| AS401712US | NJ-US-NEBIUS - Nebius Inc. | 256 | — | 1 |
| AS395969US | IQVIA-BRAMPTON - IQVIA Holdings Inc | 256 | — | 1 |
| AS63153US | STEWART-STEVENSON - Stewart & Stevenson LLC | 256 | — | 1 |
| AS396267US | TAFT-STETTINIUS-HOLLISTER - Taft, Stettinius & Hollister, LLP | 256 | — | 1 |
| AS402826US | VIRTERION - Virterion | 256 | — | 1 |
| AS398244US | ECHONET-01 - EchoNet | 256 | — | 1 |
| AS30659US | OCFL-COMPTROLLER - Orange County Comptroller | 256 | — | 1 |
| AS399798US | NOVANTAS-01 - Novantas, Inc. | 256 | 1 | 2 |
| AS399896US | VWNA-AS3 - Volkswagen Group of America, Inc. | 256 | — | 1 |
| AS398336US | MODERN-WOODMEN-OF-AMERICA - Modern Woodmen of America | 256 | — | 1 |
| AS40362US | CHAPIN-AS - Chapin School | 256 | — | 1 |
| AS14662US | CSTONE-NET - Cornerstone Systems Inc. | 256 | — | 1 |
| AS1053US | BEARCOM-ALWAYS-ON - BearCom Operating, LLC | 256 | — | 1 |
| AS401873US | STM-014 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS62742US | BDNET-01 - Blackdragon Networks, LLC | 256 | — | 1 |
| AS400435US | EAGLE-WIRELESS - Eagle Wireless LLC | 256 | — | 1 |
| AS63171US | PASADENA-ISD-AS1 - Pasadena Independent School District | 256 | — | 1 |
| AS11825US | AS-BLUEFIBER - BLUEFIBER.COM, INC. | 256 | — | 1 |
| AS401968US | APTAR-GLO-01 - AptarGroup Inc. | 256 | — | 1 |
| AS23025US | ASNSTL - City of St. Louis | 256 | — | 1 |
| AS27396US | ASSOCI-BR-AS1 - Associated Grocers | 256 | — | 1 |
| AS395070US | ALLSOUTH-INTERNET - AllSouth Federal Credit Union | 256 | — | 1 |
| AS398205US | WSFARMS-LRO-01 - Sanderson Farms, Inc. | 256 | — | 1 |
| AS62635US | WEBISTICS-HOLDINGS-LTD - VPNWholesaler.com | 256 | — | 1 |
| AS397434US | CSBS-HQ - Conference of State Bank Supervisors, Inc. | 256 | — | 1 |
| AS62855US | CMA-MISCNY - Currier, McCabe and Associates, Inc. | 256 | — | 1 |
| AS22656US | SINE-NOMINE-ASSC - Sine Nomine Associates Inc. | 256 | — | 1 |
| AS395412US | VS-MEDIA-IPV4 - VS Media Inc. | 256 | — | 1 |