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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS23109US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS16699US | US-HENSELPHELPS-AS01 - Hensel Phelps | 256 | — | 1 |
| AS393231US | CMH - CLINTON MEMORIAL HOSPITAL | 256 | — | 1 |
| AS395327US | BAYFEDCU - BAY FEDERAL CREDIT UNION | 256 | — | 1 |
| AS30615US | MITCHELL-INTERNATIONAL - Mitchell International | 256 | — | 1 |
| AS401064US | SUDOBLOCK - sudoblock | 256 | — | 1 |
| AS151975US | EAAPPL-AS-AP - Electronic Arts Inc. | 256 | — | 1 |
| AS394773US | DELEKUS-HOLDINGS - Delek US | 256 | — | 1 |
| AS19474US | ORGANIC-VALLEY - Organic Valley | 256 | — | 1 |
| AS10956US | TALKFUSION - Talk Fusion, Inc | 256 | — | 1 |
| AS401052US | KONVERGENCE-TECHNOLOGIES - Konvergence Technologies | 256 | — | 1 |
| AS399596US | APOG-MUSKINGUM - Apogee Telecom Inc. | 256 | — | 1 |
| AS62898US | SOSCOMM-1 - SOS Communications LLC | 256 | — | 1 |
| AS398926US | SCCC-01 - St. Charles Community College | 256 | — | 1 |
| AS401019US | ZAVALA-COMMUNICATIONS - Zavala Communications LLC | 256 | — | 1 |
| AS393859US | MVC-WIRELESS - Mission Valley Communications, LLC. | 256 | — | 1 |
| AS401686US | APTAERONET - Aptaero, Inc. | 256 | — | 1 |
| AS26069US | ALVERNIAUNIVERSITY-AS01 - Alvernia University | 256 | — | 1 |
| AS4576US | ASN1 - Michael & Susan Dell Foundation | 256 | — | 1 |
| AS33071US | ISC-F-AS - Internet Systems Consortium, Inc. | 256 | 1 | 2 |
| AS401877US | WBC-ASN-03 - Weigel Broadcasting Co | 256 | — | 1 |
| AS19307US | MONTG-47-AS - Water Works & Sanitary Sewer Board of the City of Montgomery | 256 | — | 1 |
| AS25604US | GULF-SOUTH-PIPELINE - GULF SOUTH PIPELINE CO LP | 256 | — | 1 |
| AS396235US | TODFL - Town of Davie | 256 | — | 1 |
| AS13752US | P1FCU-01 - P1FCU | 256 | — | 1 |
| AS40559US | CROSSCOM - CROSSCOM NATIONAL, LLC | 256 | — | 1 |
| AS393749US | GWDCPW - Greenwood CPW | 256 | — | 1 |
| AS53680US | DI-ASN - Dynamic Infrastructure LLC | 256 | — | 1 |
| AS13844US | SJRH - St. John's Riverside Hospital | 256 | — | 1 |
| AS54356US | GENENSIS-SYSTEMS-LLC - GENESIS SYSTEMS, INC. | 256 | — | 1 |
| AS394398US | CFSMI-HQ - Client Financial Services of Michigan, LLC | 256 | — | 1 |
| AS395595US | NSG-LR - Network Services Group, Inc. | 256 | — | 1 |
| AS393281US | HB2000 - City of Huntington Beach | 256 | — | 1 |
| AS22076US | NEWSBANK - NewsBank Inc. | 256 | — | 1 |
| AS396372US | GPHEALTH - Great Plains Health | 256 | — | 1 |
| AS47553US | MISAKA-BYOIP Misaka Network, Inc. | 256 | 2 | 3 |
| AS47017US | JRFJ-USE - Unlimited Systems Engineering | 256 | — | 1 |
| AS29966US | VGRS-AC22 - VeriSign Global Registry Services | 256 | — | 1 |
| AS13430US | THEWISP-NWIL - DC COMPUTERS | 256 | — | 1 |
| AS396866US | OZARKS-ELECTRIC-COOP - Ozarks Electric Cooperative Corporation | 256 | — | 1 |
| AS400567US | CHRISTIAN-CARE-MINISTRIES - Christian Care Ministries, Inc. | 256 | — | 1 |
| AS39949US | CITYOFVANCOUVER-US - City Of Vancouver | 256 | — | 1 |
| AS394767US | GROUPONE-SC1 - Group One Consulting, Inc. | 256 | — | 1 |
| AS54981US | MANDOLARE-01 - Mandolare LLC | 256 | 1 | 2 |
| AS394359US | FARELOGIX - Farelogix, Inc. | 256 | — | 1 |
| AS13618US | HCEA - Holy Cross Energy | 256 | — | 1 |