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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS19427US | AS19427 - JBFCS | 256 | — | 1 |
| AS401380US | CYBERFOREST-COMMUNICATION-AMERICAN - CyberForest | 256 | 1 | 2 |
| AS54964US | PBC-CORPASN - Premier Business Centers | 256 | — | 1 |
| AS26897US | EDF-MANCM - Marex Capital Markets, Inc. | 256 | — | 1 |
| AS395914US | ADVWIRELESS - Advanced Wireless | 256 | 65.5K | 2 |
| AS398948US | CCRWEST-AS - Institute for Defense Analyses | 256 | — | 1 |
| AS20133US | CASS-COL - CASS INFORMATION SYSTEMS | 256 | — | 1 |
| AS21809US | LNRP - LNR Property Corp | 256 | — | 1 |
| AS40179US | HC06 - Hunterdon Central Regional High School | 256 | — | 1 |
| AS14631US | EMPIREPAPER-WF - Empire Paper Company | 256 | — | 1 |
| AS22708US | QLA-DIA - CAVALIERS OPERATING CO LLC. | 256 | — | 1 |
| AS16914US | MBHARCH - MBH ARCHITECTS | 256 | — | 1 |
| AS397632US | MOHAVEC-COUNTY - Mohave County AZ | 256 | — | 1 |
| AS19439US | REACH-MEDIA-LLC - Reach Media LLC | 256 | — | 1 |
| AS395277US | ST-LUKES-HOSPITAL - Aspirus, Inc. | 256 | — | 1 |
| AS19347US | JACKSON-1 - JACKSON NATIONAL LIFE INSURANCE CO. | 256 | — | 1 |
| AS12088US | NABANCARD - North American Bancard, LLC | 256 | — | 1 |
| AS13547US | PORTER-HOSPITAL - Porter Hospital | 256 | — | 1 |
| AS54360US | USJ-ASN - USJ | 256 | — | 1 |
| AS46669US | AMERICAN-PACIFIC-MORTGAGE - American Pacific Mortgage Corp. | 256 | — | 1 |
| AS396280US | CASENETLLC - Casenet, LLC | 256 | — | 1 |
| AS22568US | AS-SKYFI - Sky Fi | 256 | — | 1 |
| AS396078US | DIGITALREALTY-IT-01 - Digital Realty Trust, L.P. | 256 | — | 1 |
| AS22741US | LAURENS-ELECTRIC - Laurens Electric Cooperative, Inc | 256 | — | 1 |
| AS397992US | AXION - Axion | 256 | — | 1 |
| AS397185US | LACU - Corda Credit Union | 256 | — | 1 |
| AS30434US | LOEWS - LOEWS CORPORATION | 256 | — | 1 |
| AS197US | RAYTHEON-AS-2 - Raytheon Company | 256 | — | 1 |
| AS64250US | VOCALOGIC - DialPath | 256 | — | 1 |
| AS1751US | LEXMARK-AS - Lexmark International Inc. | 256 | 5 | 6 |
| AS30291US | DFMC - Delmarva Foundation for Medical Care, Inc. | 256 | — | 1 |
| AS54440US | PCL-ASN1 - Pamir Consulting LLC | 256 | — | 1 |
| AS39482US | sfm-hk Supply Frame, Inc. | 256 | — | 1 |
| AS394979US | ACELANET-1 - RiverStreet Networks | 256 | — | 1 |
| AS26257US | WASHINGTON-COUNTY-OF-PA - County Of Washington | 256 | — | 1 |
| AS35841US | CHATS-ASN - CHATSWORTH PRODUCTS, INC. | 256 | — | 1 |
| AS62565US | INXOPEN - INX Open LLC | 256 | — | 1 |
| AS401782US | BOKU-ASN-01 - Boku, Inc. | 256 | — | 1 |
| AS395631US | KASD - Kutztown Area School District | 256 | 16 | 2 |
| AS13508US | BAKER-BROTHERS - Baker Bros. Advisors, LLC | 256 | — | 1 |
| AS11460US | ZALECORP - Zale Delaware, Inc. | 256 | — | 1 |
| AS4505US | WHDH-BOS - WHDH-TV | 256 | — | 1 |
| AS13901US | AS-AFILIAS-NRT1 - Afilias, Inc. | 256 | 1 | 2 |
| AS19722US | NFTA - Niagara Frontier Transportation Authority | 256 | — | 1 |
| AS36055US | MARKET-STRATEGIES-INTERNATIONAL - MARKET STRATEGIES | 256 | — | 1 |
| AS397959US | ADTELL-SHIP-01 - Adtell Integration | 256 | — | 1 |