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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 |
| 768 |
| — |
| 3 |
| AS30302US | ASPEN-DENTAL-INC - ASPEN DENTAL MANAGEMENT, INC. | 768 | — | 3 |
| AS393245US | YAHOO-SWB - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS33252US | BASSPRO-AS - Bass Pro, LLC. | 768 | — | 3 |
| AS399372US | JNET - Pueblo of Jemez | 768 | — | 3 |
| AS394951US | EDF-RE-DC2 - EDF Renewables, Inc. | 768 | — | 2 |
| AS4867US | CBOE - Cboe | 768 | — | 3 |
| AS1422US | MEDIA6-ASN - Media6degrees | 768 | — | 3 |
| AS402162US | BENTHOST - Benthost LLC | 768 | 256 | 4 |
| AS21959US | RMI-NETWORK-ATLANTA - Railcar Management Inc | 768 | — | 3 |
| AS14162US | FHLB-PITT - FEDERAL HOME LOAN BANK of PITTSBURGH | 768 | — | 3 |
| AS393233US | VENTIVTECH - Ventiv Technology Inc. | 768 | — | 3 |
| AS36852US | SERVIT - SERVIT, INC. | 768 | — | 2 |
| AS21784US | AUCRWWL - The Robert W. Woodruff Library of the Atlanta University Center, Inc. | 768 | — | 2 |
| AS401572US | ALTERAHEALTH-ASN01 - Altera Digital Health Inc. | 768 | — | 3 |
| AS401656US | ATINETWORKS-01 - ATI NETWORKS, INC. | 768 | — | 2 |
| AS55251US | TAXHAWK-AS - TaxHawk, Inc. | 768 | — | 3 |
| AS401233US | ALLIANCE-BROADBAND - Alliance Broadband | 768 | — | 2 |
| AS399003US | CCL-AS-01 - chr.is Consulting LLC | 768 | 256 | 3 |
| AS40731US | LATIN-IP - Latin IP LLC | 768 | — | 3 |
| AS11679US | STIHL-204-124-67 - Stihl Inc. | 768 | — | 3 |
| AS402510US | ESSYSS-NETWORK - Essyss | 768 | — | 3 |
| AS33288US | DASH FT - Dash Financial Technologies LLC | 768 | — | 3 |
| AS11875US | WILLIAM-HERRIN - William Herrin, Sole Proprietorship | 768 | 16 | 3 |
| AS29781US | ECPI-AS - ECPI Colleges, Inc. | 768 | — | 2 |
| AS54370US | SKYWEST - SKYWEST AIRLINES, INC. | 768 | — | 3 |
| AS395290US | PORTOFPORTLAND - Port of Portland | 768 | — | 3 |
| AS2562US | TI-US-INTL - Texas Instruments Incorporated | 768 | — | 3 |
| AS54013US | VARONIS-US - Varonis Systems, Inc. | 768 | — | 3 |
| AS54099US | CITYOFSAVANNAH - City of Savannah | 768 | — | 3 |
| AS33160US | OLDREPUBLICTITLEAS - OLD REPUBLIC NATIONAL TITLE INSURANCE CO. | 768 | — | 3 |
| AS398756US | SUNYBROOME-AS - SUNY Broome Community College | 768 | — | 3 |
| AS393962US | BLC-ASN-01 - Baillie Lumber Co., L.P. | 768 | — | 3 |
| AS25907US | BRINKER-INT - BRINKER INTERNATIONAL INC | 768 | — | 3 |
| AS100US | FMC-CTC - FMC Central Engineering Laboratories | 768 | — | 3 |
| AS398026US | INDIANAPOLIS-AIRPORT-AUTHORITY - Indianapolis Airport Authority | 768 | — | 3 |
| AS53554US | NCUA-GOV---NATIONAL-CREDIT-UNION-ADMINISTRATION - National Credit Union Administration | 768 | — | 3 |
| AS12131US | VC-AS-02 - Vertical Computers | 768 | 131.1K | 5 |
| AS399503US | AMERICOM - Dice Carrier Services LLC | 768 | 4.1K | 37 |
| AS63317US | GREENVILLECOUNTYSC - Greenville County | 768 | — | 3 |
| AS32467US | SAKS-HBC-AS - SFA Holdings Inc. | 768 | — | 3 |
| AS27560US | ULTCO - Universal Leaf Tobacco Company Inc. | 768 | — | 3 |
| AS30606US | BHSF - Baptist Health South Florida, Inc. | 768 | — | 3 |
| AS11385US | LUNA-CDN - Luna USA, LLC | 768 | — | 3 |
| AS23008US | NORC-1 - NORC | 768 | 2 | 5 |
| AS398152US | ASN-CW-1 - Choice Wireless | 768 | — | 3 |
| AS53388US | TEFEXIA - Tefexia LC | 768 | 65.5K | 5 |