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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 | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 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.
32,220 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 | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| 256 |
| — |
| 1 |
| AS46124US | NETISUP - The Net Is Up Inc. | 256 | — | 1 |
| AS19593US | SMITHDRUGCOMPANY - Smith Drug Company | 256 | — | 1 |
| AS393350US | TELTRUST - Teltrust Corp. | 256 | — | 1 |
| AS393216US | UCC-EDU-AS - Union County College | 256 | — | 1 |
| AS393871US | HAVAS-USA-E-DC - Havas Health, Inc. | 256 | — | 1 |
| AS54472US | 54472 - South Jersey Radiology Associates, P.A. | 256 | — | 1 |
| AS12159US | SECURITIESAMERICA - Securities America Inc. | 256 | 1 | 2 |
| AS19861US | WCBE - Washington County Board of Education | 256 | — | 1 |
| AS401195US | BSO-ASN-01 - Broward Sheriff's Office | 256 | — | 1 |
| AS15124US | TOR-CCONNECT-01 - Town of Ridgefield | 256 | — | 1 |
| AS32943US | WEB-OF-NEVADA-01 - Web of Nevada | 256 | 256 | 2 |
| AS398134US | BENEVIS-DC1-ASN - Benevis Corp | 256 | — | 1 |
| AS36799US | CUBIC-AS - Cubic Corporation | 256 | — | 1 |
| AS54219US | SCHAWK-INC - Matthews International Corporation | 256 | — | 1 |
| AS13618US | HCEA - Holy Cross Energy | 256 | — | 1 |
| AS400760US | ACCESSON-NETWORKS-INC - AccessOn Networks, Inc. | 256 | 65.5K | 2 |
| AS55109US | KASON-ASN - KASON INDUSTRIES INC. | 256 | — | 1 |
| AS12230US | TABLEBOUND - Tablebound LLC | 256 | 256 | 2 |
| AS394457US | OMNIMODE - OMNI-MODE TRADE LLC | 256 | 65.5K | 2 |
| AS397953US | ALVIN-ISD-01 - Alvin Independent School District | 256 | — | 1 |
| AS401454US | REDLINEINTERNET - Red Line Internet Services LLC | 256 | — | 1 |
| AS14984US | DYNACOM - DynaCom Management, Inc | 256 | — | 1 |
| AS26045US | LUBBCO1 - Lubbock County | 256 | — | 1 |
| AS26545US | THE-BANKERS-BANK - The Bankers Bank | 256 | — | 1 |
| AS398992US | SAMA-1 - Share and Make Aware LLC | 256 | 4.1K | 2 |
| AS400302US | AS-PIKNIK - PiKNiK & Company Inc. | 256 | 1 | 2 |
| AS401073US | A10NETWORKS-INC - A10 Networks Inc. | 256 | — | 1 |
| AS46350US | SILBER00 - Silberline Mfg. Co. Inc. | 256 | — | 1 |
| AS209827US | INFOSECVPN-AS Del Andujar | 256 | — | 1 |
| AS399132US | AS-GNS - Genesis Network Solutions, INC. | 256 | — | 1 |
| AS393862US | CHILDRENSOMAHA - Children's Hospital & Medical Center | 256 | — | 1 |
| AS53957US | MILLERS-CAPITAL - Millers Capital Insurance Company | 256 | — | 1 |
| AS30454US | CO-LIN - Copiah-Lincoln Community College | 256 | — | 1 |
| AS394663US | ARTIFICIAL LABS AI USA - Artificial Labs Corp | 256 | — | 1 |
| AS22618US | GWK-LLC - Gannett Welsh & Kotler LLC | 256 | — | 1 |
| AS29707US | MATCU - Orion Federal Credit Union | 256 | — | 1 |
| AS64202US | CHELSIO - Chelsio Communications, Inc. | 256 | — | 1 |
| AS54091US | WWMCASN - White Wilson Medical Center, P.A. | 256 | — | 1 |
| AS22222US | OMAHASTEAKS - Omaha Steaks | 256 | — | 1 |
| AS150802US | NTC-AS-INBAG - NORTHERN TRUST CORPORATION | 256 | — | 1 |
| AS40017US | PPD-RESEARCH-TRIANGLE-PARK-NC - PPDI | 256 | — | 1 |
| AS15303US | NIKE-SECURITIES - First Trust Portfolios L.P. | 256 | — | 1 |
| AS11120US | ISYS-LLC - WidePoint Integrated Solutions Corp. | 256 | — | 1 |
| AS399855US | KEYSTONEREN - Keystone REN, LLC | 256 | 256 | 2 |
| AS402186US | SERO - SeroWeb LLC | 256 | — | 1 |
| AS25944US | OCP-AS-01 - Society of Young Enterprise Engineers Ltd. | 256 | 16 | 2 |