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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 | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS1700US | RICE-AS1700 - Rice University | 256 | — | 1 |
| AS394258US | AS-WCASD-1 - West Chester Area School District | 256 | — | 1 |
| AS398724US | AMAW - AMAWATERWAYS, LLC | 256 | — | 1 |
| AS396482US | GRAYTELEVISION - Gray Media, Inc. | 256 | — | 1 |
| AS400162US | SLOPESIDE-SOFTWARE-01 - Slopeside Software | 256 | — | 1 |
| AS395202US | BRADFORD-COUNTY-FLORIDA - Bradford County Board of County Commissioners | 256 | — | 1 |
| AS36293US | NHVAS - North Hunterdon-Voorhees Regional High School District | 256 | — | 1 |
| AS46835US | CENTRASTATE-MEDICAL-CENTER - Centrastate Medical Center, Inc. | 256 | — | 1 |
| AS46767US | SMLWIRELESS - SMLW, Inc. | 256 | 16.4K | 2 |
| AS393862US | CHILDRENSOMAHA - Children's Hospital & Medical Center | 256 | — | 1 |
| AS398736US | IRIDIUM-SATELLITE-ENT - IRIDIUM SATELLITE,LLC | 256 | 3 | 4 |
| AS32556US | TAHASN - Titusville Area Hospital | 256 | — | 1 |
| AS64229US | ALASKA - Byte Networking LLC | 256 | — | 1 |
| AS395285US | TVW-K20 - TVW | 256 | — | 1 |
| AS62901US | MOELIS-CO - Moelis & Company Holdings LP | 256 | — | 1 |
| AS402210US | LACHOLLANET - LaChollaNet | 256 | — | 1 |
| AS396348US | CUMBERLAND-ELECTRIC-MEMBERSHIP-CORP - Cumberland Electric Membership Corp | 256 | — | 1 |
| AS22743US | AS22743 - Corelogic Solutions, LLC | 256 | — | 1 |
| AS397664US | WSC-CHANDLER-AZ - Weidenhammer Systems Corp. | 256 | — | 1 |
| AS21665US | AMPLIGHT-VENTURES - AmpLight Ventures LLC | 256 | 256 | 2 |
| AS16419US | COF-EQX-CHI-PP - Capital One Financial Corporation | 256 | — | 1 |
| AS23303US | ABTECH-CARLSBAD - Abtech Technologies, Inc. | 256 | — | 1 |
| AS30460US | HOLMESCC - Holmes Community College | 256 | — | 1 |
| AS394526US | ADVOCAREAS1 - AdvoCare International, L.P. | 256 | — | 1 |
| AS397271US | BCG - Blount County Government | 256 | — | 1 |
| AS139682US | APKSL-AS-AP - Arnold & Porter Kaye Scholer LLP | 256 | — | 1 |
| AS399754US | HCHS-30 - Harlan County Health System | 256 | — | 1 |
| AS398030US | ATFBGP-LIN - ATF, INC. | 256 | — | 1 |
| AS23538US | JOHNSON-COUNTY-ASN - Johnson County Iowa | 256 | — | 1 |
| AS40836US | VECTORSEC - VECTOR SECURITY INC | 256 | — | 1 |
| AS23130US | DPS-AS-01 - Diamond Pharmacy Services | 256 | — | 1 |
| AS401758US | DDBURR - DD BURR INVESTMENT COMPANY LLC | 256 | — | 1 |
| AS54261US | PHCCNET - Pasco-Hernando State College | 256 | — | 1 |
| AS53445US | TVHEALTH - The Villages Health | 256 | — | 1 |
| AS62612US | UDWIR - Utilities District of Western Indiana REMC | 256 | — | 1 |
| AS399763US | FIVESTAR-TIERPOINT-01 - Issues Management, Inc. | 256 | — | 1 |
| AS395696US | INTOXALOCK - Intoxalock | 256 | — | 1 |
| AS219330US | ADT-ANYCAST-DNS ADTELLIGENT INC. | 256 | — | 1 |
| AS19352US | NACHA-HQ - NACHA The Electronic Payments Association | 256 | — | 1 |
| AS395056US | AS395056 - PLS Financial Services, Inc. | 256 | — | 1 |
| AS19697US | DUPRE - Dupre Energy Services LLC | 256 | — | 1 |
| AS17271US | SPSCOMMERCE - SPS Commerce, Inc. | 256 | — | 1 |
| AS46624US | BEEBE-MEDICAL-CENTER - Beebe Medical Center Inc. | 256 | — | 1 |
| AS402675US | COG - City | 256 | — | 1 |
| AS384US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 256 | — | 1 |
| AS53341US | PBA4103-AS - Peoples Bank of Alabama | 256 | — | 1 |