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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. | 218M | 23,961 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,159 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| — |
| — |
| 0 |
| AS4106US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4121US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4160US | SPECTRA - Internet Direct Marketing | — | — | 0 |
| AS4166US | NAVI-AS-4166 - Navisite Opco LLC | — | — | 0 |
| AS4170US | DNIC-AS-04170 - United States Department of Defense (DoD) | — | — | 0 |
| AS4228US | CDFA-CA-GOV - State of California Department of Food & Agriculture | — | — | 0 |
| AS4267US | CERNET-ASN-BLOCK - California Education and Research Federation Network | — | — | 0 |
| AS4268US | CERNET-ASN-BLOCK - California Education and Research Federation Network | — | — | 0 |
| AS4276US | INCH - Internet Channel | — | — | 0 |
| AS4287US | CENTURYLINK-TSDS-NCFYVL - CenturyLink Communications, LLC | — | — | 0 |
| AS4302US | DNIC-AS-04302 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS4315US | DNIC-AS-04315 - Headquarters, USAISC | — | — | 0 |
| AS4333US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4346US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4392US | CROWN-NET - Crown Engineering Inc. | — | — | 0 |
| AS4398US | DSI-CUST-BLK2 - Houston Associates, Inc. | — | — | 0 |
| AS4401US | DSI-CUST-BLK2 - Houston Associates, Inc. | — | — | 0 |
| AS4449US | ASN-GALSTAR - Galaxy Star Systems | — | — | 0 |
| AS4486US | EMTF-RAM - Air Force Systems Networking | — | — | 0 |
| AS4488US | EMTF-CRO - Air Force Systems Networking | — | — | 0 |
| AS4489US | EMTF-MOL - Air Force Systems Networking | — | — | 0 |
| AS4527US | RCN-AS-1 - RCN | — | — | 0 |
| AS4573US | SEQUEL2 - Sequel Concepts | — | — | 0 |
| AS4932US | I3 - I3 Inc | — | — | 0 |
| AS4936US | HC-LIB - Howard County Library | — | — | 0 |
| AS4947US | RISE-IA-2 - JAB Wireless, INC. | — | — | 0 |
| AS4951US | SPRINTLINK-NYSERNET2B - SPRINT, Business Serices Group | — | — | 0 |
| AS4963US | TEXOMA - Internet Texoma | — | — | 0 |
| AS4981US | TECLINK - Verizon Business | — | — | 0 |
| AS4994US | COGENT-4991-4994 - Cogent Communications, LLC | — | — | 0 |
| AS4998US | LANDE - The Lande Group | — | — | 0 |
| AS5000US | IOS-NET - IDT Corporation | — | — | 0 |
| AS5002US | BBSATLGA - AT&T Enterprises, LLC | — | — | 0 |
| AS5023US | FIREBALL - Publication Services | — | — | 0 |
| AS5045US | ASN-DATABANK1 - Databank, Inc. | — | — | 0 |
| AS5070US | COMED - CoMed Communications | — | — | 0 |
| AS5124US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5128US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5135US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5154US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5187US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5215US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5220US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5239US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5311US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5321US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |