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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 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 | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| — |
| — |
| 0 |
| AS1531US | DNIC-AS-01531 - Headquarters, USAISC | — | — | 0 |
| AS1538US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | — | — | 0 |
| AS1564US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1569US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1574US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1581US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1639US | CRTA-ASN1 - C.R.S.T. Telephone Authority | — | — | 0 |
| AS1669US | ANS-BB2 - Verizon Business | — | — | 0 |
| AS1705US | HPINC - HP Inc. | — | — | 0 |
| AS1784US | GCFA-ASN02 - GENERAL COUNCIL ON FINANCE AND ADMINISTRATION OF THE UNITED METHODIST CHURCH | — | — | 0 |
| AS1864US | DISN-PILOTNET10 - RTX BBN Technologies, Inc. | — | — | 0 |
| AS1865US | DISN-PILOTNET11 - RTX BBN Technologies, Inc. | — | — | 0 |
| AS1912US | DNIC-ASBLK-01910-01914 - United States Department of Defense (DoD) | — | — | 0 |
| AS1966US | DNIC-AS-01966 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1980US | DNIC-AS-01980 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1993US | DNIC-AS-01993 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS2141US | DNIC-AS-02141 - United States Department of Defense (DoD) | — | — | 0 |
| AS2158US | HPINC - HP Inc. | — | — | 0 |
| AS2160US | HPINC - HP Inc. | — | — | 0 |
| AS2169US | HPINC - HP Inc. | — | — | 0 |
| AS2489US | NETIOWA-AS - Net Iowa | — | — | 0 |
| AS2543US | UCIMC-AS - University of California, Irvine | — | — | 0 |
| AS2551US | RESERVED-IPADMIN - Level 3 Parent, LLC | — | — | 0 |
| AS2557US | INTER-GRP-D - Cogent Communications, LLC | — | — | 0 |
| AS2616US | DNIC-ASBLK-02616-02620 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS2620US | DNIC-ASBLK-02616-02620 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS2629US | DNIC-RAS-02629 - United States Department of Defense (DoD) | — | — | 0 |
| AS2724US | HOYOSEVENTS-2724 - Hoyos Event Networks LLC | — | — | 0 |
| AS2750US | CTNOSC-ASN-2750 - Headquarters, USAISC | — | — | 0 |
| AS2752US | THOMSONCA-AS - Thomson Financial Networks | — | — | 0 |
| AS2761US | MCI-NETE - Verizon Business | — | — | 0 |
| AS2927US | ZONE-NET1 - ZONE One Network Exchange | — | — | 0 |
| AS2944US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2952US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2962US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2966US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2967US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2973US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2996US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3011US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3021US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3024US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3039US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3070US | AINET-AS3070 - American Information Network | — | — | 0 |
| AS3427US | ESNET-AS - ESnet | — | — | 0 |
| AS3430US | ESNET-AS - ESnet | — | — | 0 |