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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.9M | 21,026 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,220 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,585 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,933 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,534 |
| 4.1K |
| — |
| 3 |
| AS21896US | ALLIANT-ENERGY - Alliant Energy | 4.1K | — | 8 |
| AS7384US | INTUIT - Intuit Inc. | 4.1K | — | 16 |
| AS40198US | MATINETWORKS - MATI | 4.1K | — | 6 |
| AS40197US | NBS-72 - Nextlink Broadband | 4.1K | — | 1 |
| AS46932US | ASD-K12 - Anchorage School District | 4.1K | — | 9 |
| AS11023US | SYSSRC - System Source | 4.1K | — | 1 |
| AS399359US | MAX - Maxcy | 4.1K | — | 16 |
| AS13919US | ALLDATA-NET01 - ADS Alliance Data Systems, Inc. | 4.1K | — | 12 |
| AS53513US | SKSRT - SPRUCE KNOB SENECA ROCKS TELEPHONE, INC. | 4.1K | — | 2 |
| AS14567US | SPRINGS - Springs Hosting | 4.1K | — | 5 |
| AS32554US | MCIU - Montgomery County Intermediate Unit | 4.1K | 65.5K | 2 |
| AS36720US | HEREINTOWN-NET - Two-Way Radio Service, Inc. | 4.1K | — | 1 |
| AS54933US | AUSTINISD-AS-1 - Austin Independent School District | 4.1K | 512 | 6 |
| AS54471US | AVH - Androscoggin Valley Hospital | 4.1K | — | 1 |
| AS26674US | ARGON-TECHNOLOGIES-INCORPORATED - Argon Technologies, Inc. | 4.1K | — | 1 |
| AS13924US | AIS-AS - Allied Internet Services | 4.1K | — | 16 |
| AS27403US | APA-CTY - Apache County Board of Supervisors | 4.1K | — | 1 |
| AS55102US | NRG-NS-2 - NRG Energy, Inc. | 4.1K | — | 7 |
| AS17326US | CONCORDIA-COLLEGE - Concordia College | 4.1K | 256 | 2 |
| AS11425US | CWIE - CWIE, LLC | 4.1K | — | 1 |
| AS394976US | ABACUS - Abacus Data Systems, Inc. | 4.1K | 2 | 7 |
| AS33254US | OMERESA - Ohio Mid Eastern Regional Education Service Agency | 4.1K | — | 9 |
| AS10653US | MVANET - USAI.NET | 4.1K | — | 1 |
| AS11889US | IVANET-DAL - iBasis, Inc. | 4.1K | 256 | 14 |
| AS11943US | NTS-LAREDO-01 - Vexus Fiber | 4.1K | — | 5 |
| AS201682US | LIQUID-WEB-BV Liquid Web B.V. | 4.1K | 65.5K | 5 |
| AS63335US | CITIZENS-BANK-AS - Citizens Bank, National Association | 4.1K | — | 6 |
| AS19472US | CAROLLO-ENGINEERS - Carollo Engineers | 4.1K | — | 6 |
| AS23339US | MU-ASN - Marymount University | 4.1K | — | 6 |
| AS12234US | UUNET-INT - Verizon Business | 4.1K | — | 7 |
| AS38047US | TAIWAN-TELECOM - Taiwan Telecom | 4.1K | 65.8K | 29 |
| AS398475US | DRILLINGINFO-VIRGINIA - Drilling Info Inc. | 4.1K | — | 3 |
| AS11061US | ANTEL-NET - Antelecom, Inc. | 4.1K | — | 1 |
| AS395098US | RFIH-NET1 - Retail Finance International Holdings, Inc. | 4.1K | — | 10 |
| AS396334US | ORU-ASN - Oral Roberts University | 4.1K | — | 9 |
| AS27020US | PRIMET-INET-AS - Prime Therapeutics LLC | 4.1K | — | 8 |
| AS13788US | USCOURTS - US Courts | 4.1K | — | 13 |
| AS53289US | DATAMOCO - Data Moving Company | 4.1K | — | 9 |
| AS203156US | Relayify-LLC Relayify LLC | 4.1K | 524.3K | 17 |
| AS31828US | SHU-AS-I2 - Seton Hall University | 4.1K | — | 5 |
| AS36170US | WESTMONT-SB - Westmont College | 4.1K | — | 16 |
| AS27183US | NSD417 - Northshore School District | 4.1K | — | 1 |
| AS19624US | SERVERROOM - Data Room, Inc | 4.1K | 16.4K | 22 |
| AS54539US | CISD - Calhoun ISD | 4.1K | — | 3 |
| AS399240US | BLUE-RIDGE-INTERNET - BLUE RIDGE INTERNET, L.L.C | 4.1K | — | 11 |
| AS22906US | TWAI - FRIT | 4.1K | 3 | 15 |