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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) | 227.7M | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.5M | 20,721 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 638 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 68.3M |
| 366 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,106 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 3,574 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,508 |
| 67.1K |
| 16 |
| 4 |
| AS1932US | CONED - Consolidated Edison Co. of New York, Inc. | 66.8K | — | 6 |
| AS23282US | COUNTYOFSB - Santa Barbara County | 66.8K | — | 6 |
| AS14852US | DCX - DaimlerChrysler Corporation | 66.8K | — | 6 |
| AS22498US | PINELLAS-COUNTY - Pinellas County Government | 66.8K | — | 8 |
| AS400117US | APOG-MWSU - Apogee Telecom Inc. | 66.8K | — | 5 |
| AS3152US | FNAL-AS - Fermi National Accelerator Laboratory (Fermilab) | 66.8K | 1 | 4 |
| AS33632US | MSU-EAGLE - Morehead State University | 66.8K | — | 4 |
| AS1559US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 66.8K | — | 3 |
| AS33348US | PIERCE-COUNTY - Pierce County | 66.8K | — | 6 |
| AS33503US | MCW-1-AS - Medical College of Wisconsin | 66.8K | 16 | 7 |
| AS40246US | NMSU - New Mexico State University | 66.8K | 65.5K | 7 |
| AS3599US | BINCNET - CDW Technologies LLC | 66.8K | 66.3K | 18 |
| AS22693US | NERIC - Albany Schoharie Schenectady BOCES | 66.8K | — | 3 |
| AS27198US | INDIANA-EXTERNAL - Indiana University | 66.8K | — | 7 |
| AS395877US | CITYOFTEMPE - City of Tempe, Arizona | 66.6K | — | 2 |
| AS43US | BNL-AS - Brookhaven National Laboratory | 66.6K | 33 | 8 |
| AS320US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.6K | 256 | 3 |
| AS338US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.6K | 256 | 5 |
| AS2701US | KSU-NET - Kansas State University | 66.6K | — | 2 |
| AS11042US | NTHL - NETWORK TRANSIT HOLDINGS LLC | 66.6K | 127K | 102 |
| AS32073US | MCPS-K12-MD-US - Montgomery County Public Schools | 66.6K | — | 14 |
| AS84US | DNIC-AS-00084 - Navy Network Information Center (NNIC) | 66.6K | 1 | 6 |
| AS21798US | INTERNATIONALDELIVERS - International Truck and Engine Corp | 66.6K | — | 5 |
| AS2650US | EOP-ASN - Executive Office Of The President | 66.6K | — | 5 |
| AS26335US | MTSU - Middle Tennessee State University | 66.6K | — | 4 |
| AS32064US | AMUAS1 - American University | 66.6K | 16 | 5 |
| AS4544US | NAVE-CONX-A - Navisite Opco LLC | 66.6K | — | 12 |
| AS801US | AMAZON-LEO - Amazon Technologies Inc. | 66.6K | 6.7K | 101 |
| AS55013US | MTSSYSTEMSCORP - MTS Systems Corporation | 66.6K | — | 5 |
| AS401152US | ADCIL-ASN-01 - Ace Data Centers II, L.L.C. | 66.6K | — | 161 |
| AS11827US | WSU-PUL-AS - Washington State University | 66.6K | 256 | 16 |
| AS6932US | EBSCOPUB - EBSCO Publishing | 66.6K | — | 5 |
| AS7905US | SOONER-AS - Sooner Technology | 66.6K | — | 4 |
| AS18777US | TEXAS-STATE-UNIVERSITY - Texas State University | 66.6K | — | 5 |
| AS53380US | LGCNS-AS - LG CNS America Inc. | 66.6K | — | 5 |
| AS4130US | UPITT-AS - University of Pittsburgh | 66.6K | 66 | 6 |
| AS25640US | HAWAII-DEPT-OF-EDUC - Hawaii Department of Education | 66.6K | — | 5 |
| AS22238US | DARPA - Defense Advanced Research Projects Agency(DARPA) | 66.3K | — | 4 |
| AS11052US | IHC-NET - Intermountain Health Care, Inc. | 66.3K | — | 3 |
| AS26817US | MICROC-ASN - Microchip Technology Inc. | 66.3K | — | 4 |
| AS10364US | UAHNET - University of Alabama in Huntsville | 66.3K | — | 3 |
| AS352US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.3K | 256 | 5 |
| AS11205US | CITY-OF-PHILADELPHIA - City of Philadelphia | 66.3K | — | 3 |
| AS20452US | BSU - BALL STATE UNIVERSITY | 66.3K | 1 | 4 |
| AS32513US | BATTELLE-MEMORIAL-INSTITUTE - BATTELLE MEMORIAL INSTITUTE | 66.3K | — | 4 |
| AS7212US | VANDERBILT - Vanderbilt University | 66.3K | 65.5K | 5 |