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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. | 218.1M | 24,718 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,222 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 | 3,893 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,007 |
| AS701US | UUNET - Verizon Business | 43.6M | 997 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 512 |
| — |
| 2 |
| AS18763US | PHJW-LLP - Paul, Hastings, Janofsky & Walker LLP | 512 | — | 2 |
| AS53502US | HFT-CALABASAS - Central Purchasing, LLC | 512 | — | 2 |
| AS396000US | TEAMINDUSTRIALSERVICES - Team Industrial Services, Inc. | 512 | — | 2 |
| AS22187US | RAULAND-BORG - Rauland-Borg Corporation | 512 | — | 2 |
| AS396033US | BFDX515 - BioFire Diagnostics, LLC | 512 | — | 2 |
| AS21553US | ASP-MAIN - Aspirus, Inc. | 512 | — | 2 |
| AS25891US | SVA-ANS - School Of Visual Arts, Inc. | 512 | — | 1 |
| AS397775US | RVH-ASN - RIVERVIEW HOSPITAL | 512 | — | 2 |
| AS396456US | THEMAC-1891 - Multnomah Athletic Club | 512 | — | 2 |
| AS19442US | AGILENT-SCS - Agilent Technologies, Inc. | 512 | — | 2 |
| AS394196US | OCCU-CORP-INET - OREGON COMMUNITY CREDIT UNION | 512 | — | 2 |
| AS18829US | GALAXY-CONTROL-SYSTEMS - Galaxy Control Systems | 512 | — | 2 |
| AS395890US | BROADVIEWFCU - Broadview Federal Credit Union | 512 | — | 2 |
| AS14622US | AS-14622-CHI - GoFIBER | 512 | — | 1 |
| AS19838US | BLUE-WATER-NETWORKS - Blue Water Networks | 512 | — | 1 |
| AS399740US | NEOGOV-DR - NEOGOV | 512 | — | 2 |
| AS32280US | THE-EWSCRIPPS - The E.W. Scripps Company | 512 | — | 2 |
| AS395259US | KIRKLAND-ELLIS-NY - Kirkland & Ellis LLP | 512 | — | 2 |
| AS400990US | SU-ASN-01 - Shepherd University | 512 | — | 2 |
| AS398906US | CVHQ - Conviction HQ | 512 | — | 2 |
| AS63333US | ASN-ONEOK-INC - ONEOK | 512 | — | 2 |
| AS25739US | ADTRAN - Adtran, Inc. | 512 | 17 | 4 |
| AS26102US | CALIBRE6354 - CALIBRE Systems Inc. | 512 | — | 2 |
| AS400234US | AFMC-1 - Arkansas Foundation for Medical Care, Inc. | 512 | — | 2 |
| AS12201US | SCC-LAKELAND - Saddle Creek Corporation | 512 | — | 2 |
| AS402705US | ALIGN-BROADBAND - Align | 512 | — | 1 |
| AS396176US | NADCORP-AS1 - North American Division of Seventh-day Adventists | 512 | 4.1K | 3 |
| AS394777US | SMBMI - San Manuel Band of Mission Indians | 512 | — | 2 |
| AS63205US | ELWOOD - Elwood Union Free School District | 512 | — | 2 |
| AS12219US | MILLERS-SUPPLIES-AT-WORK-INC - Miller's Supplies at Work | 512 | — | 2 |
| AS396873US | BABYPENGUIN - Baby Penguin LLC | 512 | — | 2 |
| AS400267US | AS-FWC - FOUR WINDS CASINO AND RESORT | 512 | — | 2 |
| AS18561US | EPAM - EPAM Systems, Inc | 512 | 2 | 4 |
| AS11546US | UNOMAHA-AS - The Board of Regents of the University of Nebraska | 512 | — | 1 |
| AS399094US | MTE - MIDDLE TENNESSEE ELECTRIC MEMBERSHIP CORPORATION (THE) | 512 | — | 2 |
| AS30690US | KAZEHANA-NETWORKS - Kazehana Networks LLC | 512 | 7 | 9 |
| AS16563US | NEXUM-ASN - Nexum, Inc. | 512 | — | 1 |
| AS22842US | ATT-L3 - Butler County Community College | 512 | — | 2 |
| AS40524US | FUNSOFT-AS - Fundamental Software, Inc. | 512 | — | 2 |
| AS25980US | SKYHELM-DC1 - SkyHelm LLC | 512 | — | 2 |
| AS26549US | MY-PBX-MANAGER - The Flat Planet Phone Company Inc. | 512 | 2 | 4 |
| AS395634US | DOUGLAS-COUNTY - Douglas County Government | 512 | — | 2 |
| AS395369US | HPSAS001 - HPS Investment Partners, LLC | 512 | — | 2 |
| AS40375US | THE-BANK-OF-NEW-YORK-MELLON-CORPORATION-AS40375 - The Bank of New York Mellon Corporation | 512 | — | 2 |
| AS22035US | STCASN - SAVE THE CHILDREN | 512 | — | 2 |
| AS395268US | INSPERITY - Insperity Services, L.P. | 512 | — | 2 |