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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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. | 218M | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| SIMPLEASN-SIMPLEHUMAN-US - SIMPLEHUMAN, LLC |
| 256 |
| — |
| 1 |
| AS13827US | WASHPOST - Washington Post | 256 | — | 1 |
| AS22485US | MONTANA-OPTICOM-AS22485 - Montana Opticom, LLC | 256 | — | 1 |
| AS396036US | CPI-ASN - CPI | 256 | — | 1 |
| AS30443US | GOLDEN-STATE-OVERNIGHT-DELIVERY-SERVICE-INC - Golden State Overnight Delivery Service, Inc. | 256 | — | 1 |
| AS11085US | NCS-TECHNOLOGIES - NCS Technologies Inc | 256 | — | 1 |
| AS398483US | SRS-PHARMACY - SRS Pharmacy Systems, Inc. | 256 | 1K | 2 |
| AS400410US | DONNA-4 - Dona Ana County | 256 | — | 1 |
| AS401401US | UNREDACTED-NOISENET - Unredacted Inc | 256 | 1 | 2 |
| AS401437US | NEXTGUARD-HOSTING - NextGuard Solutions, Inc. | 256 | — | 1 |
| AS397054US | ELUVIO - Eluvio, Inc | 256 | 1 | 2 |
| AS401279US | FREECLOUD-01 - Free Cloud Information Technology Co., LTD | 256 | — | 1 |
| AS397703US | APOG-GRAMBLING - Apogee Telecom Inc. | 256 | — | 1 |
| AS30681US | JCU-ASN - John Carroll university | 256 | — | 1 |
| AS395289US | KENTUCKY-FARM-BUREAU-MUTUAL-INSURANCE - Kentucky Farm Bureau Mutual Insurance | 256 | — | 1 |
| AS54068US | CGS-BGP - City of Greenville, SC | 256 | — | 1 |
| AS18751US | BPL-B1 - Basketball Properties Ltd | 256 | — | 1 |
| AS32426US | WV-SCHOOL-OF-OSTEOPATHIC-MEDICINE - WV School of Osteopathic Medicine | 256 | — | 1 |
| AS395804US | GRH - Grande Ronde Hospital, Inc. | 256 | — | 1 |
| AS396536US | SENTRACAM - SentraCam | 256 | — | 1 |
| AS40783US | CPC - Combined Public Communications, Inc. | 256 | — | 1 |
| AS394884US | FAMOUS-SMOKE-AS - Famous Smoke Shop | 256 | — | 1 |
| AS25724US | EXPENSEANYWHERE - Virtual Communications | 256 | — | 1 |
| AS400326US | NETFIRE-NFFIBER01 - NetFire, LLC | 256 | 1 | 2 |
| AS11332US | CRESTRON - Crestron Electronics Inc | 256 | — | 1 |
| AS26552US | PROMCAP - IntraFi LLC | 256 | — | 1 |
| AS40381US | AS-ADM-DC2 - ADM | 256 | — | 1 |
| AS54958US | LWS-01 - LAW Wireless, LLC | 256 | — | 1 |
| AS399817US | LAER-AS-DWF1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS397977US | ANA-218-LB - American Nurses Association, Inc | 256 | — | 1 |
| AS402247US | FLEW - flew llc | 256 | 18 | 4 |
| AS400520US | MTNLINKD-01 - Mtnlinkd, Inc | 256 | — | 1 |
| AS11755US | ANDREWS-ASN01 - Andrews Distributing Company of North Texas, LLC | 256 | — | 1 |
| AS397885US | TUSSCO-ASN - Tuscaloosa County Commisssion | 256 | — | 1 |
| AS35930US | DCOD - Datacenter on demand LLC | 256 | 4.1K | 2 |
| AS33373US | FHLBB-5 - Federal Home Loan Bank of Boston | 256 | — | 1 |
| AS398293US | LCUB-NET-01 - LCUB | 256 | — | 1 |
| AS394988US | FLCC-AS - Finger Lakes Community College | 256 | — | 1 |
| AS19150US | ABCWUA-ASN - Albuquerque Bernalillo County Water Utility Authority | 256 | — | 1 |
| AS398751US | SMCC-ASN-01 - Southwest Mississippi Community College | 256 | — | 1 |
| AS14175US | HAWORTH - HAWORTH | 256 | — | 1 |
| AS33370US | AS-RIVCTY - City of Riverside | 256 | — | 1 |
| AS13556US | IVANET-MIAMI - IBASIS INC. | 256 | — | 1 |
| AS402553US | CAV-PROD-AS-01 - Cavnue | 256 | 1 | 2 |
| AS17355US | WSD - Wayzata School District, ISD #284 | 256 | — | 1 |
| AS27231US | CARILION-HEALTH-SYSTEM - CARILION HEALTH SYSTEM | 256 | — | 1 |
| AS19707US | SETL-1-AS-00 - Summit Energy Tech LLC | 256 | — | 1 |