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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| SEAS - Southern Methodist University |
| — |
| — |
| 0 |
| AS1879US | STUPI STUPI LLC | — | — | 0 |
| AS1963US | PENRIL-AS - Penril Datacomm Networks | — | — | 0 |
| AS1969US | TELEDYNE-AS - Verizon Business | — | — | 0 |
| AS1987US | DNIC-AS-01987 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS2007US | INFONET3 - INFONET Services Corporation | — | — | 0 |
| AS2138US | DOW2-AS - Houston Dow Center | — | — | 0 |
| AS2151US | CENIC-2151 - CENIC | — | — | 0 |
| AS2172US | HPINC - HP Inc. | — | — | 0 |
| AS2490US | MILNET-T20 - RTX BBN Technologies, Inc. | — | — | 0 |
| AS2556US | INTER-GRP-C - Cogent Communications, LLC | — | — | 0 |
| AS2560US | BOCA-AS - IBM | — | — | 0 |
| AS2564US | GLO - Texas General Land Office | — | — | 0 |
| AS2765US | CONNECTED - Connected INC | — | — | 0 |
| AS2885US | MERIT-AS-28 - Merit Network Inc. | — | — | 0 |
| AS2889US | MCI-AREA-2 - Verizon Business | — | — | 0 |
| AS2918US | ERCNET - ERC, Incorporated | — | — | 0 |
| AS2932US | NEDI-GIS - News Electronic Data, Inc. | — | — | 0 |
| AS2953US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2986US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2991US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2995US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2999US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3020US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3027US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3056US | AB-ASN - Allen-Bradley Company, Inc. | — | — | 0 |
| AS3079US | CITI13 - Citigroup Inc. | — | — | 0 |
| AS3110US | HOLONET - Kurt J. Pires, Sole Proprietorship | — | — | 0 |
| AS3355US | LITC - Lockheed Martin Corporation | — | — | 0 |
| AS3365US | SEESIP-1-3365 - Seesip Inc. | — | — | 0 |
| AS3409US | CALLVOX - Callvox | — | — | 0 |
| AS3437US | ESNET-AS - ESnet | — | — | 0 |
| AS3547US | DNIC-AS-03547 - United States Department of Defense (DoD) | — | — | 0 |
| AS3570US | FMC-1 - FMC Corporation | — | — | 0 |
| AS3647US | COGENT-3647 - Cogent Communications, LLC | — | — | 0 |
| AS3675US | IS-NET - Internet Services of Atlanta | — | — | 0 |
| AS3694US | NOAA-SUITLAND - National Oceanic and Atmospheric Administration | — | — | 0 |
| AS3720US | TIMS-AS - The Internet Mainstreet, Inc. | — | — | 0 |
| AS3721US | ASN-MIKUNI - Mikuni Berkeley R&D Corp. | — | — | 0 |
| AS3726US | JCALS-NET - CSC- JCALS | — | — | 0 |
| AS3749US | TECNET - Tennessee Board Of Regents | — | — | 0 |
| AS3767US | SOSCORP-AS - SOS Corp. | — | — | 0 |
| AS3809US | WELLSFARGO-3809 - Wells Fargo Bank, N.A. | — | — | 0 |
| AS3820US | ACP - American Center for Physics | — | — | 0 |
| AS3831US | RESERVED-IPADMIN - Level 3 Parent, LLC | — | — | 0 |
| AS3861US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3866US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |