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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 25,270 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,323 |
| 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.
32,193 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,009 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,230 |
| 5.9K |
| 9 |
| 32 |
| AS396258US | SEATTLEU-AS - Seattle University | 5.9K | — | 5 |
| AS30031US | MIMECAST-US - Mimecast North America Inc | 5.9K | 5 | 26 |
| AS32058US | SBG-AS1 - Sinclair Broadcast Group, Inc. | 5.9K | 4.1K | 23 |
| AS17056US | CIPHERSPACE - CipherSpace, LLC | 5.9K | 65.5K | 14 |
| AS23344US | DSS-EDGE - Disney Worldwide Services, Inc. | 5.9K | 23 | 46 |
| AS996US | JY-MOBILE-COMMUNICATIONS - JY Mobile Communications | 5.9K | 262.1K | 10 |
| AS30635US | ASANDJ-AS-233W - AS&J Associates, Inc. | 5.9K | — | 8 |
| AS21837US | OPERASOFTWARE - Opera Software Americas LLC | 5.9K | 2 | 12 |
| AS4358US | XNET - XNet Information Systems, Inc. | 5.9K | — | 7 |
| AS397041US | SEVERANCE-CO-LIGHTGIG - Lightgig Communications LLC | 5.9K | 67.1K | 30 |
| AS1696US | CITIGROUP-1696 - Citigroup Inc. | 5.9K | — | 23 |
| AS393340US | COXAUTO - Cox Enterprises Inc | 5.9K | — | 21 |
| AS20009US | WADSNET - The City of Wadsworth | 5.9K | 1 | 5 |
| AS29752US | ZEN-SDN - Zenlayer Inc | 5.9K | 9 | 31 |
| AS46392US | GCPOWERNET - Grant County Powernet, Inc. | 5.9K | 65.5K | 11 |
| AS18590US | CHINETWORKS - Chi Networks | 5.9K | — | 23 |
| AS26709US | RACKSQUARED-DATA-CENTERS - Racksquared | 5.9K | 65.5K | 22 |
| AS400317US | ORCHEST - GoldConnect | 5.9K | 4.1K | 16 |
| AS19766US | DRYDEN-FIBER - Dryden Fiber | 5.9K | — | 5 |
| AS35251US | ANTI-DDOS - NetLab Global | 5.9K | 1 | 20 |
| AS396979US | OSD-ASN-1 - OXNARD SCHOOL DISTRICT | 5.9K | — | 4 |
| AS30139US | UTSG-30139 - United Technology Services Group Inc. | 5.9K | — | 4 |
| AS22320US | MVECA-AS - Miami Valley Educational Computer Association | 5.9K | — | 8 |
| AS399861US | MOBITE-NET - Mobite Network LLC | 5.9K | 4.1K | 21 |
| AS32458US | INDCONET - IND. CO. CABLE TV, INC. | 5.9K | 32.8K | 25 |
| AS53927US | ACI-WORLDWIDE - ACI Worldwide, Inc. | 5.9K | — | 7 |
| AS14072US | WASH-DC-CITY-GOVT - Government of the District of Columbia | 5.9K | — | 14 |
| AS19275US | INTERVAL - Interval International, Inc. | 6.1K | — | 9 |
| AS15294US | SENTINELTECH - Sentinel Technologies, Inc. | 6.1K | 17 | 15 |
| AS7265US | WOW-INTERNET - WideOpenWest Finance LLC | 6.1K | — | 21 |
| AS26498US | SANFORD-LAB - Sanford Underground Laboratory at Homestake | 6.1K | — | 2 |
| AS400737US | AMS-CO-CXO - HEWLETT PACKARD ENTERPRISE COMPANY | 6.1K | — | 4 |
| AS36243US | BPS-NETWORKS - BPS Networks | 6.1K | 65.5K | 6 |
| AS21779US | HARLANONLINE - Harlan Community Television, Inc. | 6.1K | — | 3 |
| AS36612US | CLARKCOUNTYWA - Clark County WA | 6.1K | — | 2 |
| AS3374US | MCI-ASN - Verizon Business | 6.1K | — | 2 |
| AS11966US | GLOBALDATASYSTEMS-ASN - GLOBAL DATA SYSTEMS INC. | 6.1K | — | 8 |
| AS32578US | KC-EURON-1 - Euronet Worldwide, Inc. | 6.1K | 4 | 15 |
| AS46979US | MCTC-INTERNET - Madison County Telephone Company | 6.1K | — | 4 |
| AS46985US | HPWREN - The Regents of the University of California - University of California, San Diego. | 6.1K | — | 8 |
| AS16843US | CELLTEX-NETWORKS - Celltex Networks, LLC | 6.1K | 65.5K | 13 |
| AS14726US | CHISHOLMBB - Chisholm Broadband LLC | 6.1K | — | 8 |
| AS46288US | TRELLIS - Trellis Communications, Inc. | 6.1K | — | 8 |
| AS18948US | NYMC2000-ARIN - New York Medical College | 6.1K | — | 3 |
| AS18519US | MEDIAPOLIS-TELEPHONE-COMPANY - MTC Technologies | 6.1K | 65.5K | 4 |
| AS14238US | FC - Falcon Communications LLC | 6.1K | — | 14 |