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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| — |
| 1 |
| AS395769US | NUASN1 - Northwest University | 256 | — | 1 |
| AS54426US | TOSA - Texas Organ Sharing Alliance | 256 | — | 1 |
| AS22209US | RUDYS-AS - RUDYS INFLIGHT CATERING | 256 | — | 1 |
| AS3601US | IXA-NET - Interconnected Associates (IXA) Inc. | 256 | 1 | 2 |
| AS20166US | 1FBUSA-1 - 1st Financial Bank USA | 256 | — | 1 |
| AS53652US | PMDC - Providence Management and Development Company Incorporated | 256 | — | 1 |
| AS399032US | CNC-NET-01 - Cosner-Neipp Corporation | 256 | 4.1K | 2 |
| AS18645US | UMHB-BELTON - UMHB | 256 | — | 1 |
| AS32486US | CBSBANK - CB&S Bank, Inc. | 256 | — | 1 |
| AS46200US | ITC-146 - IT Curves | 256 | — | 1 |
| AS3443US | ESNET-AS - ESnet | 256 | — | 1 |
| AS6292US | MTAPD-GB - MTAPD | 256 | 2 | 3 |
| AS54920US | PHAEDON - Phaedon Acquisition, Inc. | 256 | — | 1 |
| AS400422US | MODERNTREASURY - Modern Treasury Corp. | 256 | 1 | 2 |
| AS27511US | PUNAHOU - Punahou School | 256 | — | 1 |
| AS11511US | CRETE-INTERNET - Crete Carrier Corporation | 256 | 1 | 2 |
| AS22789US | PUSHWOOSH - Pushwoosh | 256 | — | 1 |
| AS54066US | WURTHBSC - Wurth Baer Supply Company | 256 | — | 1 |
| AS397329US | CSCI-3662 - Central Security Communications, Inc. | 256 | — | 1 |
| AS36553US | BALTIMORE-CITY-POLICE-DEPARTMENT - Baltimore City Police Department | 256 | — | 1 |
| AS397799US | SEMINOLE-CLERK-OF-COURTS-AND-COMPTROLLER - Seminole County Clerk of Courts and Comptroller | 256 | 1 | 2 |
| AS394426US | COM-AS - City of Maricopa | 256 | — | 1 |
| AS16763US | TIDEWORKS - Tideworks Technology | 256 | — | 1 |
| AS399050US | ROW-CAB-01 - Rowan-Cabarrus Community College | 256 | — | 1 |
| AS401378US | HTMONI - HTMONI TECHNOLOGY LLC | 256 | — | 1 |
| AS398463US | MSUFSD-1-AS - Mount Sinai Union Free School District | 256 | — | 1 |
| AS400860US | AS-NEXUSHOSTING - Nexuscore Hosting | 256 | — | 1 |
| AS396415US | COMCAST-MES - Comcast Cable Communications, LLC | 256 | — | 1 |
| AS23301US | WISC-INVESTMENT-BOARD - State of Wisconsin Investment Board | 256 | — | 1 |
| AS30301US | INTRUST-WICHITA - INTRUST Bank, N.A. | 256 | — | 1 |
| AS399437US | LUZERNE-IT-ASN - Luzerne County | 256 | — | 1 |
| AS22384US | PERFORMIVE-VNI - Performive LLC | 256 | — | 1 |
| AS399803US | HOMETOWNWIRELESS-LLC - Hometown Tech, LLC | 256 | — | 1 |
| AS63352US | HABOTA-DNS - Habota | 256 | — | 1 |
| AS32129US | CITIZEN-WATCH-COMPANY - Citizen Watch Company Of America, Inc. | 256 | — | 1 |
| AS53515US | AMTELCO-204-27-231-AS - AMTELCO | 256 | — | 1 |
| AS395325US | TRIPLEBCORP - Triple B Corporation | 256 | — | 1 |
| AS11574US | SFGNET-AS - San Francisco Baseball Associates LLC | 256 | — | 1 |
| AS400297US | XAI - X.AI | 256 | — | 1 |
| AS21941US | SYNCSORT-INC - Precisely Software Incorporated | 256 | — | 1 |
| AS400491US | PCEWEST - PCE Systems | 256 | — | 1 |
| AS27368US | SOLOCUP-ASN - Solo Cup Company LLC | 256 | — | 1 |
| AS36288US | ASN-IARC - NNSA Information Assurance Response Center (IARC) | 256 | 1 | 2 |
| AS397061US | HRL-MLB-01 - HRL Laboratories, LLC | 256 | — | 1 |
| AS26916US | TCW-AS-NY - The TCW Group, Inc. | 256 | — | 1 |
| AS35952US | PARADOXNETWORKS-INC - ParadoxNetworks, Inc | 256 | 1 | 2 |