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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 |
| AS21997US | APEXCOVANTAGE-192-74-136 - Apex CoVantage, LLC | 256 | — | 1 |
| AS21673US | NGMC-ASN - Northeast Georgia Medical Center, Inc. | 256 | — | 1 |
| AS40352US | RH-UNK - Rapid Hacks LLC | 256 | — | 1 |
| AS393893US | ACS-ASN-01 - Alliance Cloud Services LLC | 256 | — | 1 |
| AS393622US | PAFFORD-MEDICAL-SERVICES - PAFFORD MEDICAL SERVICES | 256 | — | 1 |
| AS32379US | SOUTHERN-GRAPHIC-SYSTEMS-INC - Southern Graphic Systems, LLC | 256 | — | 1 |
| AS393551US | LON-DC-01 - Exiger LLC | 256 | — | 1 |
| AS400321US | ARC-NET - Arcosa, Inc. | 256 | — | 1 |
| AS402179US | LAWNCHAIR - LAWNCHAIR VENTURES LIMITED LIABILITY COMPANY | 256 | — | 1 |
| AS19121US | BLATTNER-HOLDING-COMPANY - Blattner Company | 256 | — | 1 |
| AS401417US | ACL-204 - ATLANTIC CONTAINER LINE (USA) LLC | 256 | — | 1 |
| AS62792US | SSFCU - Suncoast Credit Union | 256 | — | 1 |
| AS399056US | ENTCOLO-01 - Ent Credit Union | 256 | — | 1 |
| AS394521US | SMH-91-WTBY-CT - Saint Mary's Hospital, Inc. | 256 | — | 1 |
| AS53854US | AS53854 - Griffin Health Services Corp. | 256 | — | 1 |
| AS395614US | COL - City of Lansing | 256 | — | 1 |
| AS49466US | AS-KLAYER Klayer LLC | 256 | — | 1 |
| AS21676US | GSIC-PA - Radial, Inc. | 256 | — | 1 |
| AS207098US | APPLAUSEDE Applause App Quality, Inc. | 256 | — | 1 |
| AS32635US | CITYOFCLOVIS - City of Clovis | 256 | — | 1 |
| AS399830US | APOG-SOUTHGATE - Apogee Telecom Inc. | 256 | 1 | 2 |
| AS54959US | LM-AFSS - Lockheed Martin Corporation | 256 | — | 1 |
| AS22989US | FREEASINFREEDOM - Free Software Foundation, Inc. | 256 | 1 | 2 |
| AS402828US | EXOS-TECH - Exos | 256 | — | 1 |
| AS54575US | SUKUT-ASN - SUKUT CONSTRUCTION, INC | 256 | — | 1 |
| AS218293US | UNSC-FLEETNET Kendall Powell | 256 | 18 | 4 |
| AS53783US | MEMORIAL-HEALTH-CARE-SYSTEMS - Memorial Health Care Systems | 256 | — | 1 |
| AS395906US | MBG-AS - Missouri Botanical Garden Board of Trustees | 256 | — | 1 |
| AS395659US | SEAWORLD-PARKS-AND-ENTERTAINMENT - SeaWorld Parks & Entertainment, Inc. | 256 | — | 1 |
| AS401024US | COMMUNICATIONSAUTHORITY - Communications Authority, INC | 256 | 256 | 2 |
| AS402679US | ORBSIX - ORBSIX | 256 | — | 1 |
| AS402393US | ROCKYNET - RockyNet | 256 | — | 1 |
| AS402057US | NEURONG - NEURON DC INC | 256 | 16 | 2 |
| AS53318US | DPS-CL1 - Deep Systems LLC | 256 | — | 1 |
| AS22131US | RFN-FIBER - Reach Fiber Network, LLC | 256 | 65.5K | 2 |
| AS21670US | BPC-CERMAK - Berlin Packaging, LLC | 256 | — | 1 |
| AS27389US | MANSFIELDISD - Mansfield Independent School District | 256 | — | 1 |
| AS396433US | COMMUNITY-MEDICAL-CENTER - Community Medical Center, Inc | 256 | — | 1 |
| AS40129US | FREEDOMHEALTH - Sentry Data Systems, Inc. | 256 | — | 1 |
| AS13685US | ASN-RCSD-01 - Rochester City School District | 256 | 4.1K | 2 |
| AS394057US | BPS-ASN - Batavia Public School District 101 | 256 | — | 1 |
| AS11860US | AEGIS-INSURANCE-SERVICES-INC - AEGIS Insurance Services, Inc. | 256 | — | 1 |
| AS402259US | AS-ZT - ZT Enterprises LLC | 256 | 256 | 2 |
| AS394661US | MNA01 - Manning & Napier Advisors, LLC | 256 | — | 1 |
| AS26993US | STANDARDASN - STANDARD TEXTILE CO., INC. | 256 | — | 1 |
| AS27368US | SOLOCUP-ASN - Solo Cup Company LLC | 256 | — | 1 |