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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. | 218M | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| — |
| 2 |
| AS14428US | POMEROY-TECH-01 - Pomeroy Technologies LLC | 512 | — | 2 |
| AS400770US | RCPS-SBO - City of Radford | 512 | — | 2 |
| AS399222US | NEWCOM-01 - NEWCOM, INC | 512 | — | 2 |
| AS36761US | KSBW-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS393922US | SKTAPRIMARY - Smurfit Kappa the Americas | 512 | — | 2 |
| AS401824US | CORITAN - Coritan LLC | 512 | — | 2 |
| AS54732US | DOW-NETWORKS - Dow Networks | 512 | — | 1 |
| AS30690US | KAZEHANA-NETWORKS - Kazehana Networks LLC | 512 | 7 | 9 |
| AS54017US | UCARE-MN - UCare Minnesota | 512 | — | 2 |
| AS23372US | FDIX-PUBLIC - Midwest Internet Exchange LLC | 512 | 2 | 4 |
| AS33173US | MYGN-US - Myriad Genetics Incorporated | 512 | — | 2 |
| AS402461US | KYRO-123 - KyroTelecom | 512 | — | 2 |
| AS54613US | CVDN - Converted Networks LLC | 512 | 4.1K | 4 |
| AS33468US | EOJ1 - Locknet | 512 | — | 2 |
| AS20383US | EXCHANGEBANK-AS - Exchange Bank | 512 | — | 2 |
| AS63056US | HOOPESTON-AREA-SCHOOLS - Hoopeston Area Schools | 512 | 1 | 3 |
| AS53309US | BLACKHILLSCORP - Black Hills Corporation | 512 | — | 2 |
| AS395634US | DOUGLAS-COUNTY - Douglas County Government | 512 | — | 2 |
| AS198365US | versa-eu-asn-01 Versa Networks Inc | 512 | — | 2 |
| AS400672US | AS-PHOENIXNAP-LA0 - PhoenixNAP LLC | 512 | 257 | 4 |
| AS397873US | AS-SOLADRIVE - SolaDrive | 512 | — | 2 |
| AS16548US | EAST-PENN-MANUFACTURING - East Penn Manufacturing | 512 | — | 2 |
| AS20320US | EVENLINK - Evenlink | 512 | — | 1 |
| AS397108US | WNMC - WNM Communications | 512 | — | 2 |
| AS402452US | LX-AER - LX | 512 | 65.5K | 3 |
| AS395369US | HPSAS001 - HPS Investment Partners, LLC | 512 | — | 2 |
| AS11546US | UNOMAHA-AS - The Board of Regents of the University of Nebraska | 512 | — | 1 |
| AS42495US | Spencer-Sharkey Spencer Sharkey | 512 | — | 2 |
| AS18772US | SKY-LAKES-MEDICAL-CENTER - Sky Lakes Medical Center, Inc. | 512 | — | 1 |
| AS398367US | QUIC-CLOUD - Lite Speed Technologies Inc. | 512 | — | 2 |
| AS13452US | AS-IL1-DIA - Guggenheim Services LLC | 512 | — | 2 |
| AS400862US | CCH1-IPV4-01 - Castle & Cooke Hawaii | 512 | — | 2 |
| AS397099US | TA-OPERATING-01 - TravelCenters of America | 512 | — | 2 |
| AS393988US | ALLEGHENYAUTH-01 - Pittsburgh International Airport | 512 | — | 2 |
| AS27025US | EDR-AS - Environmental Data Resources, Inc. | 512 | — | 2 |
| AS25980US | SKYHELM-DC1 - SkyHelm LLC | 512 | — | 2 |
| AS32837US | WCL-50-AS - Williams & Connolly, LLP | 512 | — | 2 |
| AS4889US | USPSOIG-AS2 - United States Postal Service Office of Inspector General | 512 | — | 1 |
| AS396873US | BABYPENGUIN - Baby Penguin LLC | 512 | — | 2 |
| AS400398US | MFSG - Money Mart Financial Services Group | 512 | — | 1 |
| AS63369US | TANNER-MEDICAL-CENTER - Tanner Medical Center, Inc. | 512 | — | 2 |
| AS14419US | MOSSYOAK - HAAS OUTDOORS, Inc. | 512 | — | 2 |
| AS395828US | ROAMABILITY - ROAMABILITY LLC | 512 | — | 2 |
| AS398412US | WEBER-COUNTY-01 - WEBER COUNTY | 512 | — | 1 |
| AS36764US | KCCI-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS46443US | CFE-AS - Addition Financial Credit Union | 512 | — | 2 |