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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 26.9K |
| — |
| 62 |
| AS32645US | PIVOT - Fidium | 26.6K | — | 31 |
| AS11448US | CLEARWAVE-FIBER - Clearwave Communications | 26.6K | 65.5K | 36 |
| AS10747US | EPIC-HOSTING - Epic Hosting, LLC | 26.6K | — | 25 |
| AS50245US | SERVEREL-AS Serverel Inc. | 26.4K | 524.3K | 16 |
| AS53768US | LABCORP - Laboratory Corporation of America | 26.4K | — | 16 |
| AS7361US | DATAZONE - DataZone Networks LLC | 26.4K | — | 69 |
| AS33362US | WIKTEL - Wikstrom Telephone Company, Incorporated | 26.4K | 1M | 15 |
| AS27563US | SEGRA-UNITY - Spirit Communications | 26.1K | 6 | 44 |
| AS7224US | AMAZON-AS - Amazon.com, Inc. | 26.1K | — | 31 |
| AS12285US | ONE-ELEVEN - ShawneeLink Corporation | 26.1K | — | 9 |
| AS33333US | OBJX - objx.net, LLC | 26.1K | 196.6K | 29 |
| AS36383US | GEN-AS1 - Google LLC | 26.1K | — | 22 |
| AS10962US | CERNER-CORP-ASN - Cerner Corporation | 26.1K | — | 5 |
| AS22255US | ALLEGHENYHEALTHNETWORK - Allegheny Health Network | 26.1K | — | 18 |
| AS41378US | KirinoNET Kirino LLC | 26.1K | 385 | 74 |
| AS13855US | CFU-NET - The Municipal Communications Utility of the City of Cedar Falls, Iowa | 26.1K | 65.5K | 11 |
| AS11924US | MONTANA-OPTICOM - Montana Opticom, LLC | 26.1K | 65.5K | 45 |
| AS21737US | SPRINGNET2-NET - SpringNet | 26.1K | 65.5K | 11 |
| AS20474US | NCIDATACOM - NCI Data.com, Inc. | 26.1K | — | 22 |
| AS46636US | NATCOWEB - NatCoWeb Corp. | 25.9K | 65.5K | 24 |
| AS397122US | NORVADO-NET - Chequamegon Communications Cooperative, Inc. | 25.9K | 65.5K | 6 |
| AS17035US | NBCUNI-17035 - NBCUniversal | 25.9K | — | 40 |
| AS23342US | UNITEDLAYER - Unitedlayer, Inc. | 25.9K | 73.7K | 26 |
| AS53856US | NJIX - NJ IX | 25.9K | — | 28 |
| AS5758US | MICHIGAN-BROADBAND - ALPHA ENTERPRISES LIMITED, INC. | 25.9K | — | 31 |
| AS6303US | BARCLAYS-CAPITAL - Barclays Capital | 25.9K | — | 45 |
| AS22364US | AS-22364 - Telefonica Global Solutions USA, INC | 25.9K | 65.5K | 44 |
| AS26356US | CRUSOE - CRUSOE ENERGY SYSTEMS LLC | 25.9K | — | 44 |
| AS398203US | MIDSOUTH-FIBER-AS - MidSouth Fiber | 25.6K | 65.5K | 5 |
| AS399060US | BEC-COMM - BEC Communications, LLC | 25.6K | 65.5K | 38 |
| AS22442US | HOU-PHONOSCOPE - Phonoscope, Inc. | 25.6K | 65.5K | 50 |
| AS19323US | HGE-NET - Holyoke Gas & Electric Department | 25.6K | 65.5K | 9 |
| AS15149US | EZZI-101-BGP - Core Technology Services, Inc. | 25.6K | — | 7 |
| AS149US | DNIC-AS-00149 - United States Department of Defense (DoD) | 25.6K | — | 17 |
| AS3361US | DF-TUKWILA01 - Digital Fortress, Inc. | 25.6K | 131.1K | 39 |
| AS62957US | HOSPITALITY-NETWORK - HOSPITALITY NETWORK, LLC | 25.6K | — | 37 |
| AS19886US | BOFABROKERDEALERSVCS - Bank of America, National Association | 25.3K | — | 52 |
| AS62651US | NETPROTECT-DP - Strong Technology, LLC. | 25.3K | 14.6K | 138 |
| AS18834US | NETWORKIP - Network IP | 25.3K | — | 7 |
| AS18434US | FNIS - Fidelity National Information Services, Inc. | 25.3K | — | 99 |
| AS11676US | AS11676 - Conduent Business Services, LLC | 25.3K | — | 45 |
| AS4043US | MIC-ASN - Montana Internet Corporation | 25.3K | 65.5K | 5 |
| AS1280US | ISC-AS-1280 - Internet Systems Consortium, Inc. | 25.3K | 65.5K | 99 |
| AS20413US | CHS1-20413 - Chesconet | 25.3K | 65.5K | 6 |
| AS48806US | stackster Stackster LLC | 25.3K | 2 | 78 |
| AS23068US | MEIJERNET - MEIJER | 25.3K | — | 9 |