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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS33037US | ANTHEMCONNECT - Anthem Broadband | 256 | 4.1K | 2 |
| AS397874US | LUCASFILM-VAN - Lucasfilm Ltd. LLC | 256 | — | 1 |
| AS54515US | MRMC - Milford Regional Medical Center Inc. | 256 | — | 1 |
| AS401896US | MISIU-USA - MISIU LLC | 256 | 257 | 3 |
| AS396531US | ATIMETALS - Allegheny Technologies Incorporated | 256 | — | 1 |
| AS29816US | SWA-MKT-INET-2 - Southwest Airlines Co. | 256 | — | 1 |
| AS397948US | SUCCESSION-SYSTEMS-01 - Succession Systems LLC | 256 | — | 1 |
| AS20479US | MCSO-PSC-1 - Monmouth County Sheriff's Office | 256 | — | 1 |
| AS396403US | AVMED - Avmed | 256 | — | 1 |
| AS22715US | SALEM-INTERNET - Salem Internet, Inc. | 256 | 65.5K | 2 |
| AS400732US | RIVERNET - RiverNet, LLC | 256 | 4.1K | 2 |
| AS397329US | CSCI-3662 - Central Security Communications, Inc. | 256 | — | 1 |
| AS54250US | SF3050 - NavCom Technology, Inc | 256 | — | 1 |
| AS3470US | DNIC-AS-03470 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS16969US | NEFEC-ASN01 - North East Florida Educational Consortium (Putnam County School District) | 256 | — | 1 |
| AS395635US | GAS-SBC - Guardian Alarm Systems, Inc. | 256 | — | 1 |
| AS36553US | BALTIMORE-CITY-POLICE-DEPARTMENT - Baltimore City Police Department | 256 | — | 1 |
| AS31858US | MWNA-ASN - MARSHALL WACE NORTH AMERICA L.P. | 256 | — | 1 |
| AS21935US | EPSILONDATA50 - Epsilon Data Management LLC | 256 | — | 1 |
| AS18993US | AFS147 - Area Financial Services Inc. | 256 | — | 1 |
| AS40275US | SECURITYMETRICS - SecurityMetrics, Inc. | 256 | — | 1 |
| AS397013US | ALEGEUS-02-US - ALEGEUS TECHNOLOGIES, LLC | 256 | — | 1 |
| AS63108US | MMRSAG-10 - Mobile Medical Response Inc | 256 | — | 1 |
| AS398862US | AMBULATORYCLAM - AMBULATORY CLAM NETWORK | 256 | 1 | 2 |
| AS394036US | TRUJS - Truity Federal Credit Union | 256 | — | 1 |
| AS22989US | FREEASINFREEDOM - Free Software Foundation, Inc. | 256 | 1 | 2 |
| AS22131US | RFN-FIBER - Reach Fiber Network, LLC | 256 | 65.5K | 2 |
| AS402212US | NICKTRONICIT - NicktronicIT LLC | 256 | 1 | 2 |
| AS16385US | CESG-16385 - COWEN EXECUTION SERVICES LLC. | 256 | — | 1 |
| AS394798US | CPD-AS - Chicago Park District | 256 | — | 1 |
| AS400726US | AIRHAWK-WIRELESS - Airhawk Wireless | 256 | — | 1 |
| AS401667US | STG-PAASASN-01 - Scale Technology Group, Inc | 256 | — | 1 |
| AS36717US | PRO-EMS - Professional Ambulance & Oxygen Service, Inc. | 256 | — | 1 |
| AS400116US | COLDIST-DAT1 - COLUMBIA DISTRIBUTING | 256 | — | 1 |
| AS393652US | CSB-YORK - Cornerstone Bank | 256 | — | 1 |
| AS61402US | BIO-RAD-ASN Bio-Rad Laboratories, Inc. | 256 | — | 1 |
| AS18984US | MOBOWARE - Moboware Inc. | 256 | — | 1 |
| AS398928US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS400836US | SLG-OMA - SL Green Realty Corp | 256 | — | 1 |
| AS11934US | ESL63 - Enom Solutions LLC | 256 | — | 1 |
| AS396400US | OLATHE-KS - City of Olathe | 256 | — | 1 |
| AS40433US | AEBS-ASN - AE Business Solutions | 256 | — | 1 |
| AS398058US | ECCC-EDU - East Central Community College | 256 | — | 1 |
| AS11029US | NETVATA - NetVata, LLC | 256 | 65.5K | 2 |
| AS4902US | CI-CCASN - CONSERVATION INTERNATIONAL FOUNDATION | 256 | — | 1 |
| AS64275US | EQUINIX-EC-DE - Equinix, Inc. | 256 | — | 1 |