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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 | 24,358 |
| 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 | 4,342 |
| 512 |
| 1 |
| 3 |
| AS12100US | LEXICON4800 - Lexicon International Inc | 512 | — | 2 |
| AS39985US | RACKROOM-SHOES - Rack Room Shoes | 512 | — | 2 |
| AS62669US | SANS-INSTITUTE - SANS INSTITUTE | 512 | — | 2 |
| AS268US | USUHSNET-AS - Uniformed Services University of the Health Sciences | 512 | — | 1 |
| AS399987US | TACOMA-PIERCE-COUNTY-HEALTH-DEPARTMENT - Tacoma-Pierce County Health Department | 512 | — | 2 |
| AS18829US | GALAXY-CONTROL-SYSTEMS - Galaxy Control Systems | 512 | — | 2 |
| AS397248US | FRACTALVISION-1 - FractalVision | 512 | 4.1K | 3 |
| AS395655US | TECH-ELECTRONICS-INC-ASN - Tech Electronics, Inc. | 512 | 512 | 4 |
| AS16593US | FMCIN - First Merchants Corporation | 512 | — | 2 |
| AS397709US | JRW-10 - JackRabbit Wireless | 512 | 4.1K | 3 |
| AS32697US | NMFN - NM Fiber Network, LLC | 512 | 65.5K | 3 |
| AS29943US | UNITEDSOLUTIONS - United Solutions Company | 512 | — | 2 |
| AS46458US | SAVINGCALL - Saving Call LLC | 512 | — | 2 |
| AS398010US | MFCU - MFCU | 512 | — | 2 |
| AS22696US | CBI-AS - CB&I | 512 | — | 2 |
| AS397400US | UCCSL-01 - United Call Center Solutions LLC | 512 | — | 2 |
| AS53836US | NGX-ASN02 - NGX Networks | 512 | — | 2 |
| AS26379US | AGILENT-WAD - Agilent Technologies, Inc. | 512 | — | 2 |
| AS63056US | HOOPESTON-AREA-SCHOOLS - Hoopeston Area Schools | 512 | 1 | 3 |
| AS36457US | DISTR-21 - District Photo, Inc. | 512 | — | 2 |
| AS395292US | ACRISURE-ARENA - Acrisure Arena | 512 | — | 2 |
| AS397989US | COP-CH - City of Portsmouth, Virginia | 512 | — | 2 |
| AS33239US | CIS-MSISAC - Center for Internet Security | 512 | — | 2 |
| AS395393US | MORLEY - Morley Companies Incorporated | 512 | — | 2 |
| AS396387US | EZINE-AS - EZINE INDUSTRIES INC | 512 | — | 2 |
| AS55190US | BLUEFIN-BB - Bluefin Payment Systems LLC | 512 | — | 2 |
| AS53493US | JOEMC-1 - Jones Onslow Electric Membership Corporation | 512 | — | 2 |
| AS62711US | MAXWELL - Maxwell Telecom LLC | 512 | — | 2 |
| AS396873US | BABYPENGUIN - Baby Penguin LLC | 512 | — | 2 |
| AS20383US | EXCHANGEBANK-AS - Exchange Bank | 512 | — | 2 |
| AS22035US | STCASN - SAVE THE CHILDREN | 512 | — | 2 |
| AS30151US | SLI-ASN - Silver Lake Internet, LLC | 512 | — | 1 |
| AS393988US | ALLEGHENYAUTH-01 - Pittsburgh International Airport | 512 | — | 2 |
| AS62613US | PERELESS - Pereless Systems | 512 | — | 2 |
| AS30613US | CME-TESTLAB - Chicago Mercantile Exchange | 512 | — | 1 |
| AS393931US | HS-AS-001 - HealthStream, Inc. | 512 | — | 2 |
| AS54023US | ASIC-ONT - APPLIED SYSTEMS, INC | 512 | — | 2 |
| AS36246US | MATHESONGAS - 17-909-2028 | 512 | — | 2 |
| AS36320US | FREESTYLE-01 - Freestyle Cloud, Inc. | 512 | 256 | 2 |
| AS33203US | 2CRSI - 2CRSI Corporation | 512 | 4.1K | 2 |
| AS5958US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS394610US | INCOMM-NET2 - InComm | 512 | — | 2 |
| AS11082US | ECH-ASN-EASTMAN-CHEMICAL - Eastman Chemical Company | 512 | — | 2 |
| AS29928US | EDATA - LexisNexis Risk Data Management Inc. | 512 | — | 1 |
| AS19588US | GC-1 - GOR CORPORATION | 512 | — | 2 |
| AS29764US | AMETEK-CTC - AMETEK Inc. | 512 | — | 2 |