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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 |
| AS53736US | NUTANIX-IT - Nutanix | 512 | 33 | 5 |
| AS395320US | LAKE-CHARLES-MEMORIAL-HOSPITAL - Lake Charles Memorial Hospital | 512 | — | 2 |
| AS393516US | EDMAMERICASASN - EDM Americas | 512 | — | 2 |
| AS11298US | KLD-ATX - Renew Data Corp. | 512 | — | 2 |
| AS27360US | KWIKTRIP-AS - Kwik Trip Inc. | 512 | 16 | 3 |
| AS19542US | PLICO - Protective Life Corporation | 512 | — | 2 |
| AS26157US | LOSTCIPHER-CONSULTING - Lostcipher Consulting | 512 | 512 | 4 |
| AS14939US | THRES - THRESHOLD COMMUNICATIONS,INC. | 512 | 8.2K | 4 |
| AS63260US | ALYESKA - Alyeska Inc. | 512 | 4.1K | 3 |
| AS55046US | NGS-SDC - National Government Services, Inc. | 512 | — | 2 |
| AS396014US | TSG - TSG Resources, Inc. | 512 | — | 2 |
| AS13888US | BEARCREEK-AS - Bear Creek Operations Inc | 512 | — | 2 |
| AS18702US | DEGENET-AS - DEGE NETWORK TECHNOLOGIES LLC | 512 | — | 2 |
| AS202261US | NetDEF-CH Network Device Education Foundation Inc | 512 | 2 | 4 |
| AS396109US | YOKO-NETWORKS - Yoko Networks Inc. | 512 | 4.1K | 3 |
| AS23463US | LONEPINECAPITAL - Lone Pine Capital LLC | 512 | — | 2 |
| AS401879US | RACKNODE-AS - RackNode | 512 | 257 | 4 |
| AS35851US | BANKERSBANKOFKANSAS - Bankers' Bank of Kansas | 512 | — | 2 |
| AS32052US | SULLCROM - SULLCROM | 512 | — | 2 |
| AS32460US | COPS-MONITORING - C.O.P.S. Monitoring | 512 | — | 2 |
| AS400393US | DIGITAL-EXAMPLE - Digital Example LLC | 512 | 256 | 3 |
| AS397678US | RRIS-01 - Red Rock Information Security, LLC | 512 | — | 2 |
| AS401700US | JOY-LABS-VENTURES - Joy Labs Ventures LLC | 512 | — | 1 |
| AS14257US | EZ-NET - The Iserv Company, LLC | 512 | — | 2 |
| AS23406US | CHOATEHALLSTEWART - CHOATE, HALL & STEWART, LLP | 512 | — | 2 |
| AS17321US | LHC-GROUP - LHC Group | 512 | — | 2 |
| AS400697US | OPTIMAS-SOLUTIONS - Optimas OE Solutions, LLC | 512 | — | 2 |
| AS400411US | CHS - Sisters of Charity Hospital | 512 | — | 1 |
| AS396481US | SKYHI-1 - SkyHi Broadband | 512 | — | 2 |
| AS393355US | SISA - SAMSUNG RESEARCH AMERICA, INC. | 512 | — | 2 |
| AS32630US | PCI-DB - Patterson Companies, Inc. | 512 | — | 2 |
| AS46739US | COLPIPE-EXT - Colonial Pipeline Company | 512 | — | 1 |
| AS396213US | USCUPSTATE - USC Upstate | 512 | — | 2 |
| AS32481US | OSCEOLA - Osceola County | 512 | — | 2 |
| AS394784US | MEEI-AS - Massachusetts Eye and Ear Infirmary | 512 | — | 2 |
| AS22385US | JMS-ASN - Janney Montgomery Scott, LLC | 512 | — | 2 |
| AS36807US | SAINTFRANCIS-TULSA - Saint Francis Health System | 512 | — | 1 |
| AS12209US | GIROSOL - Girosol, Corp. | 512 | — | 2 |
| AS397690US | USTX04 - 1A Smart Start LLC | 512 | 1 | 3 |
| AS26208US | COUNTY-OF-ESSEX-NJ - County of Essex NJ | 512 | — | 2 |
| AS7448US | CHOICE-HOTELS - Choice Hotels International, Inc. | 512 | — | 2 |
| AS395362US | 8X8-AS-1 - 8x8, Inc. | 512 | — | 2 |
| AS396204US | C1-BGP - CONVERGEONE HOLDINGS, INC. | 512 | — | 2 |
| AS18955US | TWEA-AS - Treasury Wine Estates Americas | 512 | — | 1 |
| AS401730US | BEACONBAYTECHNOLOGIES - Beacon Bay Technologies Inc | 512 | — | 2 |
| AS394025US | ATHOME - At Home Stores LLC | 512 | — | 2 |