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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| GUARD - GUARD INSURANCE GROUP |
| 256 |
| — |
| 1 |
| AS40691US | CCSBUSINESSSOL - CCS Business Solutions, Inc. | 256 | — | 1 |
| AS7932US | NUMERIX - Numerix | 256 | — | 1 |
| AS11219US | GLIDEWELL - James R. Glidewell Dental Ceramics Inc. | 256 | — | 1 |
| AS21931US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS14637US | SBM-ASN - STATER BROS MARKETS | 256 | — | 1 |
| AS398552US | CISD-ASN - Cleburne Independent School District | 256 | — | 1 |
| AS397051US | 1500-MED-ASSOC-DBQ - Medical Associates Clinic, P.C. | 256 | — | 1 |
| AS32447US | MARTI-AS - MARTIN RESOURCE MANAGEMENT CORP. | 256 | — | 1 |
| AS402586US | COMMURE-USA - Commure | 256 | 2 | 3 |
| AS29964US | MCCORMICK-AND-COMPANY - McCormick & Company Inc. | 256 | — | 1 |
| AS16587US | FECLRO9234 - Friday, Eldredge & Clark, LLP | 256 | — | 1 |
| AS393767US | PROTO-LABS - Proto Labs | 256 | — | 1 |
| AS393592US | IDSD - Bonneville Joint School District no. 93 | 256 | — | 1 |
| AS53693US | RAA-NYC-NET - Ralph Appelbaum Associates, Inc. | 256 | — | 1 |
| AS1650US | CAMBRIDGEMA-PUBLIC-SCHOOLS - Cambridge Public Schools | 256 | — | 1 |
| AS32048US | SULLCROM - SULLCROM | 256 | — | 1 |
| AS400749US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 256 | — | 1 |
| AS395384US | MUFSD-1 - Massapequa Union Free School District | 256 | — | 1 |
| AS19987US | MIWAVE-ASN01 - MiWave | 256 | — | 1 |
| AS26781US | BHSALA - Baptist Health System of Alabama | 256 | — | 1 |
| AS23363US | CITYOFLEWISVILLE - City of Lewisville | 256 | — | 1 |
| AS32646US | LPC-ASN - Long Pond Capital, LP. | 256 | — | 1 |
| AS11180US | AS-TIERP-11180 - TierPoint, LLC | 256 | — | 1 |
| AS46613US | CV-RI-HQ - COLLETTE VACATIONS | 256 | — | 1 |
| AS19344US | BESOV - Sovereign-Sol LLC | 256 | — | 1 |
| AS397614US | GTLAKES - Great Lakes Energy Cooperative | 256 | 26 | 12 |
| AS33191US | NOTION-WEB - Notion Labs, Inc. | 256 | 1 | 2 |
| AS11692US | CWH - Carewise Health, Inc. | 256 | — | 1 |
| AS62526US | AXCELIS-TECHNOLOGIES - AXCELIS TECHNOLOGIES | 256 | — | 1 |
| AS399284US | LUYS - luYs, Inc. | 256 | 18 | 19 |
| AS8164US | JUNO - Juno Online Services, L.P. | 256 | — | 1 |
| AS14163US | SHEARMAN - Shearman & Sterling | 256 | — | 1 |
| AS27412US | NCHE - American Council on Education | 256 | — | 1 |
| AS402223US | MLX-JYA-AS - MOLEX LLC | 256 | — | 1 |
| AS400365US | SCH-K12 - School City of Hammond | 256 | — | 1 |
| AS31750US | METHODIST-HEALTHCARE - Methodist Hospital of Memphis | 256 | — | 1 |
| AS2909US | CITI2 - Citigroup Inc. | 256 | — | 1 |
| AS400002US | LIFENET-INC - LifeNet, Inc. | 256 | — | 1 |
| AS398838US | STRAUB-COLLABORATIVE - Straub Collaborative, Inc. | 256 | 1 | 2 |
| AS402604US | QUEENSVALE - Queensvale | 256 | 4.2M | 9 |
| AS19951US | MEASUREMENT-INCORPORATED-DURHAM-DATACENTER-AS - Measurement Incorporated | 256 | — | 1 |
| AS23765US | EA-AU-AP - Electronic Arts, Australia | 256 | — | 1 |
| AS394711US | KORGRID - KorGrid, LLC | 256 | — | 1 |
| AS33462US | JANUS-LEXINGTON-MA - JANUS Research Group | 256 | — | 1 |
| AS14384US | HOSTDESIGNS - HOST DESIGNS, LLC | 256 | — | 1 |
| AS22875US | LIFEU - Life University, INC. | 256 | — | 1 |