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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 |
| 512 |
| — |
| 2 |
| AS12238US | AECOM - AECOM | 512 | — | 1 |
| AS394950US | COLLECTIVE-HEALTH - CollectiveHealth, Inc. | 512 | — | 2 |
| AS398005US | TGNA-WATN - TEGNA Inc. | 512 | — | 2 |
| AS18758US | ADRECOM - Adrecom | 512 | — | 2 |
| AS19726US | HCA-PUBLIC - HCA Information Technology & Services, Inc. | 512 | — | 2 |
| AS11720US | IBCP - Independent Bank Corporation | 512 | — | 2 |
| AS63328US | SWEETFW-NET - Sweetwater Sound Inc | 512 | — | 1 |
| AS30706US | EAMONTREAL - Electronic Arts, Inc. | 512 | — | 1 |
| AS394575US | AFS-IEP - Accenture Federal Services LLC | 512 | — | 2 |
| AS400470US | REMC10-ASN - Tuscola Intermediate School District | 512 | — | 2 |
| AS46411US | IDA-ATL-NET-ASN - LexisNexis Risk Solutions FL Inc. | 512 | — | 2 |
| AS16769US | AS16769 - Sotheby's Inc. | 512 | — | 2 |
| AS13405US | FEATHER-IT-NET - Feather IT LLC | 512 | 256 | 3 |
| AS395057US | CAREOREGON - CareOregon | 512 | — | 2 |
| AS40656US | COMETC1 - Communications Etc., Inc. | 512 | 65.5K | 3 |
| AS36598US | RADIANT-SOLUTIONS - Radiant Solution Providers | 512 | 4.1K | 2 |
| AS32885US | IHS-ASN-27 - UnityPoint Health | 512 | — | 2 |
| AS17308US | WECU-ASN - Whatcom Educational Credit Union | 512 | — | 1 |
| AS36571US | WLWT-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS394066US | CTC-AS1 - The Chugwater Telephone Company | 512 | — | 2 |
| AS399368US | KIRKLAND-ELLIS-RY - Kirkland & Ellis LLP | 512 | — | 2 |
| AS53485US | LON-NIDR - PIMCO | 512 | — | 2 |
| AS393625US | FNS-ASN - OPTIV SECURITY INC | 512 | — | 2 |
| AS396933US | TELWARE-EAST01 - TelWare Corporation | 512 | — | 2 |
| AS401729US | CS-ASN1 - CrossSignal, LLC | 512 | — | 2 |
| AS26722US | MAIN-SEQUENCE-TECHNOLOGIES - Main Sequence Technology, Inc. | 512 | 3 | 5 |
| AS13732US | CELLNET - CellNet Communications | 512 | 1 | 3 |
| AS26984US | UTL-17-26984 - Universal TelCom LLC | 512 | — | 2 |
| AS30572US | NYCB-NEW-YORK-COMMUNITY-BANCORP-INC - New York Community Bancorp Inc. | 512 | — | 2 |
| AS394149US | VI-CONCEPTS - VI Concepts, Inc. | 512 | 16 | 2 |
| AS47036US | HCPS-AS - Halifax County Public Schools | 512 | — | 2 |
| AS19913US | AS-WPNP - W-PNP, Inc. | 512 | — | 2 |
| AS400848US | DHI9PUT - DHI TECHNICAL SERVICES LLC | 512 | 256 | 2 |
| AS36833US | DVTRADING-LLC - DV TRADING, LLC | 512 | — | 2 |
| AS36589US | BNCBASHQBRNJ - BARNES & NOBLE COLLEGE BOOKSELLERS | 512 | — | 2 |
| AS14149US | ICONFITNESS-MAIN - Icon Health & Fitness Inc | 512 | — | 2 |
| AS23257US | IBMCCH-DAL-EQU - IBM | 512 | — | 2 |
| AS26511US | AACT-INTERNET - AAA Cooper Transportation, Inc. | 512 | — | 2 |
| AS30471US | RALEIGH-ENTERPRISES - Raleigh Film & Television Studios, Inc. | 512 | — | 2 |
| AS36217US | IRONPATH - NetActuate, Inc | 512 | 1 | 3 |
| AS1082US | HBH-ASN-1 - Zenith American Solutions, Inc. | 512 | — | 2 |
| AS398323US | PSBOS-1 - Provide Support LLC | 512 | — | 2 |
| AS401429US | PRIME-ONE - Prime One Net LLC | 512 | 1.3K | 6 |
| AS30259US | BROADASPECT - BroadAspect | 512 | — | 2 |
| AS40632US | FGLIFE-COLO1 - Fidelity & Guaranty Life | 512 | — | 2 |
| AS11651US | AS-TKCHOLDINGS-LLC - Centric Group, LLC | 512 | — | 2 |