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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 |
| AS53579US | FLP-5 - The Free Library of Philadelphia | 256 | — | 1 |
| AS36531US | WDBJ - WDBJ TELEVISION,INC | 256 | — | 1 |
| AS394246US | VALOR-COMMUNICATION-INC-INDUSTRY - VALOR COMMUNICATION, INC. | 256 | — | 1 |
| AS396208US | AZLE-ISD - Azle Independent School District | 256 | — | 1 |
| AS19712US | ZOLL-CHELM - ZOLL Medical Corporation | 256 | 1 | 2 |
| AS36832US | NGL-AS - Network Gibbon LLC | 256 | 256 | 2 |
| AS63008US | SIMPLE-ASN - SIMPLE CLOUD SOLUTION LLC | 256 | 2 | 3 |
| AS399364US | KIRKLAND-ELLIS-CC - Kirkland & Ellis LLP | 256 | — | 1 |
| AS400090US | LMKR-AS-01 - LMK Resources Inc. | 256 | — | 1 |
| AS970US | KEATONAGLAIR-EHRE-EIN - Keaton Alexander Guger Lair | 256 | 256 | 2 |
| AS400942US | AS-4E5A - 617A Corporation | 256 | — | 1 |
| AS25732US | TOTALCARDINC - Total Card, Inc. | 256 | — | 1 |
| AS397789US | SELCO-ASN-01 - SELCO Community Credit Union | 256 | — | 1 |
| AS395053US | CCS-CORPORATE461 - Community Counselling Service Co., LLC | 256 | — | 1 |
| AS18480US | GDT-AS - General Datatech, LP | 256 | — | 1 |
| AS397089US | USORD - EXPEDIA, INC | 256 | — | 1 |
| AS400305US | MSDMTVERNON-IN - MSD of Mt. Vernon | 256 | — | 1 |
| AS26185US | CLOUDAPT - Cloudapt LLC | 256 | — | 1 |
| AS401662US | HEIMDALLTEK - HeimdallTek | 256 | 1 | 2 |
| AS23053US | SELECTIVE-AS - Selective Insurance Company of America | 256 | — | 1 |
| AS22731US | MTB - Manufacturers and Traders Trust Company | 256 | — | 1 |
| AS400278US | TFC-ASN-01 - TITLE FINANCIAL CORPORATION | 256 | — | 1 |
| AS363US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS393332US | MCALLENISD-TX - McAllen Independent School District | 256 | — | 1 |
| AS398295US | IEC-ELECTRONICS-01 - Creation Technologies | 256 | — | 1 |
| AS23401US | US-TOOL-GRINDING - US Tool Group | 256 | — | 1 |
| AS4888US | USPSOIG-AS1 - United States Postal Service Office of Inspector General | 256 | — | 1 |
| AS836US | WHITE-PLAINS-HOSPITAL - White Plains Hospital | 256 | — | 1 |
| AS395011US | SF-PSN - City and County of San Francisco | 256 | 65.5K | 2 |
| AS64282US | LINKSECURED-DEDICATED - LINKSECURED LLC | 256 | — | 1 |
| AS14660US | ELEVATED-NY - Elevated Computing LLC | 256 | — | 1 |
| AS53802US | 382-COM - 382 Communications Corporation | 256 | — | 1 |
| AS20242US | GCO-HQ - GENESCO INC | 256 | — | 1 |
| AS31952US | CAL-NAP-ASN - Calamos Advisors LLC | 256 | — | 1 |
| AS5755US | SIAM-ASN-01 - SIAM | 256 | 1 | 2 |
| AS53472US | CKW-3 - City of Kirkland Washington | 256 | — | 1 |
| AS22755US | DAVISVISION-ASN - Davis Vision Inc. | 256 | — | 1 |
| AS36227US | HAUG-PARTNERS - Haug Partners LLP. | 256 | — | 1 |
| AS46127US | AS-DRSTECH - Leonardo DRS, Inc. | 256 | — | 1 |
| AS400632US | KUSD-ASN-01 - KUSD | 256 | — | 1 |
| AS30505US | TJU-EF - Thomas Jefferson University | 256 | — | 1 |
| AS399855US | KEYSTONEREN - Keystone REN, LLC | 256 | 256 | 2 |
| AS40607US | HCPL-7-ASN - HALL CAPITAL PARTNERS, LLC | 256 | — | 1 |
| AS397351US | TOWN-OF-FLOWER-MOUND - Town of Flower Mound | 256 | — | 1 |
| AS13731US | ONEIDANATION - Oneida Nation | 256 | 1 | 2 |
| AS19620US | PCCH-CARTER - Potawatomi Bingo Casino | 256 | — | 1 |