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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.9M | 21,017 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,219 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 228 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,585 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,932 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,534 |
| 6.4K |
| — |
| 3 |
| AS18975US | STANCOEORG95354 - Stanislaus County Office of Education | 6.4K | — | 3 |
| AS32845US | TEL-STAR - Tel-Star Communications, Inc | 6.4K | — | 19 |
| AS32898US | NTS-ALBUQUERQUE-01 - Vexus Fiber | 6.4K | — | 3 |
| AS32578US | KC-EURON-1 - Euronet Worldwide, Inc. | 6.4K | 4 | 16 |
| AS55134US | SKYNET360-LLC-7863492000 - SKYNET360 LLC | 6.4K | 4.1K | 7 |
| AS18885US | M2NGAGE2 - M2ngage Telecommunications II Corp. | 6.4K | — | 8 |
| AS33236US | HREC-AS-01 - Hood River Electric Cooperative | 6.4K | 65.5K | 11 |
| AS13782US | FAFCO - The First American Financial Corporation | 6.4K | — | 23 |
| AS394720US | ALAMO-COLLEGES - Alamo Community College District | 6.4K | — | 18 |
| AS399002US | NOVA1NET - Nova Cablevision, Inc. | 6.4K | — | 15 |
| AS27521US | CATCOMM-ASN - CATCOMM INTERNET SERVICES, LLC | 6.4K | — | 25 |
| AS40181US | ELITESYSTEMS - Elite Systems, LLC | 6.4K | — | 12 |
| AS54328US | HINTON - The Hinton CATV Company, Inc. | 6.4K | 65.5K | 6 |
| AS36612US | CLARKCOUNTYWA - Clark County WA | 6.1K | — | 2 |
| AS36827US | PBTC-ARL - PINE BELT TELEPHONE CO | 6.1K | 65.5K | 3 |
| AS26088US | INLANDTELEPHONE - Inland Internet | 6.1K | — | 4 |
| AS19275US | INTERVAL - Interval International, Inc. | 6.1K | — | 9 |
| AS26498US | SANFORD-LAB - Sanford Underground Laboratory at Homestake | 6.1K | — | 2 |
| AS18948US | NYMC2000-ARIN - New York Medical College | 6.1K | — | 3 |
| AS400737US | AMS-CO-CXO - HEWLETT PACKARD ENTERPRISE COMPANY | 6.1K | — | 4 |
| AS22280US | ENLIGHTENED-BY-WOODRUFF-ELECTRIC-LLC - Enlightened by Woodruff Electric, LLC | 6.1K | 65.5K | 10 |
| AS21779US | HARLANONLINE - Harlan Community Television, Inc. | 6.1K | — | 3 |
| AS6140US | TWO-P - Two P | 6.1K | 4.1K | 9 |
| AS32575US | DIGICERT - DigiCert, Inc. | 6.1K | 257 | 18 |
| AS400940US | RAILWAY - Railway | 6.1K | 1.8K | 17 |
| AS31849US | PINNACLE - TGM Pinnacle Network Solutions llc | 6.1K | 65.5K | 6 |
| AS2011US | WELLSFARGO-2011 - Wells Fargo Bank, N.A. | 6.1K | 1 | 8 |
| AS30456US | COSMIC - Cosmic Global Networks | 6.1K | 65.5K | 25 |
| AS14726US | CHISHOLMBB - Chisholm Broadband LLC | 6.1K | — | 8 |
| AS54045US | WAVETECHSYSTEMS - Wavetech Systems, LLC. | 6.1K | — | 9 |
| AS396290US | NCL-203-396290 - Nielsen Consumer LLC | 6.1K | — | 17 |
| AS11966US | GLOBALDATASYSTEMS-ASN - GLOBAL DATA SYSTEMS INC. | 6.1K | — | 8 |
| AS7265US | WOW-INTERNET - WideOpenWest Finance LLC | 6.1K | — | 21 |
| AS14238US | FC - Falcon Communications LLC | 6.1K | — | 14 |
| AS63298US | FATBEAM-TEKFINITY - Fatbeam, LLC | 6.1K | — | 12 |
| AS7105US | DOWJONES-AS - Dow Jones & Company, Inc. | 6.1K | — | 23 |
| AS398413US | MIAMI-DADE-COUNTY-ASN - Miami-Dade County | 6.1K | — | 17 |
| AS22301US | APC-CC-CUSTOMERS - RingSquared CC | 6.1K | — | 2 |
| AS46985US | HPWREN - The Regents of the University of California - University of California, San Diego. | 6.1K | — | 8 |
| AS5744US | USPTO - United States Patent and Trademark Office | 6.1K | 322 | 10 |
| AS53280US | PROMEDICA - The Toledo Hospital | 6.1K | 1 | 21 |
| AS40027US | NETFLIX-ASN - Netflix Streaming Services Inc. | 6.1K | 24 | 36 |
| AS400381US | CENTRICTX-ASN - Centric Fiber Texas, LLC | 6.1K | — | 15 |
| AS1054US | ZONT-LLC - Zont LLC | 6.1K | 7 | 31 |
| AS23381US | TRAVELERS - Travelers Property Casualty Corp. | 6.1K | — | 18 |
| AS3374US | MCI-ASN - Verizon Business | 6.1K | — | 2 |