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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. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
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.
32,144 autonomous systems registered to United States. Click an AS for detail.
| AS | Holder | IPv4 ↓ | IPv6 /48 | Prefixes |
|---|---|---|---|---|
| AS33652US | CMCS - Comcast Cable Communications, LLC | 14.1K | 152 | 184 |
| AS30640US | ETHERIC - Etheric Networks, Inc. | 14.1K | 65.5K | 14 |
| AS60558US | SECUREDSERVERS-EU PHOENIX NAP, LLC. | 14.1K | 259 | 33 |
| AS21100US | ITLDC-EU ROUTE 95 LLC | 13.8K | 262.1K | 40 |
| AS14213US | MONTEREY-BAY-K12 - Monterey County Office of Education | 13.8K | — | 13 |
| AS1378US | IBEL - Interbel Telephone Cooperative, Inc. | 13.8K | — | 11 |
| AS14544US | RETEK - Oracle Corporation | 13.8K | 13.6K | 19 |
| AS25694US | ATOMIC - Atomic Data LLC | 13.8K | 65.5K | 8 |
| AS39944US | TNA - Telecom North America Inc. | 13.8K | 590.8K | 49 |
| AS13676US | ILAND-AS - GoNetSpeed | 13.8K | — | 34 |
| AS13750US | TNSI-AS - Transaction Network Services, Inc. | 13.8K | 65.6K | 22 |
| AS16761US | FEDMOG-ASN-01 - Tenneco Inc. | 13.8K | — | 37 |
| AS19133US | BIRD-HOSTING - Bird Hosting Inc. | 13.8K | 13 | 38 |
| AS54665US | NGN - North Georgia Network Cooperative, Inc. | 13.8K | 196.6K | 15 |
| AS6405US | AIN - American Information Network | 13.8K | 66.6K | 12 |
| AS22534US | CS-TECH-INC - CS Technologies | 13.8K | 65.5K | 6 |
| AS54578US | FIBERCOMM - FiberComm LC | 13.8K | — | 13 |
| AS402135US | CITIZENS-MUTUAL-TELEPHONE-COOPERATIVE-ASN - Citizens Mutual Telephone Cooperative | 13.8K | — | 30 |
| AS22768US | SYNERGYBROADBAND-MI-02 - SYNERGY BROADBAND | 13.8K | 7 | 55 |
| AS16564US | ADAMS-WELLS-INTERNET - Adamswells Internet | 13.8K | — | 24 |
| AS40015US | MOVECLICKLLC - Atlantic Metro Communications II, Inc. | 13.8K | 65.5K | 9 |
| AS30174US | UTA - United Telephone Association, Inc. | 13.8K | 65.5K | 10 |
| AS32228US | ASISN - ISN Communications | 13.6K | — | 17 |
| AS20098US | BCBS-AL - Blue Cross and Blue Shield of Alabama | 13.6K | — | 6 |
| AS11030US | QUALCOMM - Qualcomm, Inc. | 13.6K | 768 | 39 |
| AS33136US | OZARK-FIBER - Ozark Fiber, LLC | 13.6K | — | 20 |
| AS26326US | US-SIGNAL-AZ01 - US Signal Company, L.L.C. | 13.6K | 256 | 10 |
| AS32611US | AS32611 - MERCEDES-BENZ USA, LLC | 13.6K | 65.5K | 11 |
| AS23535US | HOSTROCKET - HostRocket.com, Inc. | 13.6K | 256 | 9 |
| AS30313US | IRS - Internal Revenue Service | 13.6K | 65.5K | 17 |
| AS22765US | NELSONVILLE-TVCABLE - Nelsonville TV Cable Inc | 13.6K | — | 23 |
| AS26277US | SERVERPOINT - ServerPoint.com | 13.6K | 59 | 109 |
| AS27294US | RESERVETEL - Reserve Long Distance Company, Inc | 13.6K | — | 5 |
| AS40107US | QTS-DFW - Quality Technology Services, LLC | 13.6K | 65.5K | 18 |
| AS394475US | MCECFIBER-A01 - MCEC Fiber, Inc. | 13.6K | — | 25 |
| AS23207US | NORTHWESTERN-STATE - Northwestern State University | 13.6K | 1 | 20 |
| AS32590US | VALVE-CORPORATION - Valve Corporation | 13.6K | 33 | 78 |
| AS52129US | PROOFPOINT-ASN-EU Proofpoint, Inc. | 13.6K | 32 | 48 |
| AS18943US | YELCOT - YELCOT TELEPHONE COMPANY | 13.6K | 65.5K | 39 |
| AS22976US | FIRST-CITIZENS-01 - First-Citizens Bank & Trust Company | 13.6K | — | 17 |
| AS3910US | CENTURYLINK-EUROPE-LEGACY-QWEST - CenturyLink Communications, LLC | 13.6K | — | 21 |
| AS13737US | AS-INCX - Interconnecx, LLC | 13.6K | 1.3K | 75 |
| AS11942US | IPGLOBAL - IP Global, LLC. | 13.3K | 65.5K | 8 |
| AS29979US | PWN-ASBLK - Pioneer Broadband | 13.3K | — | 4 |
| AS31890US | ROCKET - Rocket Limited Partnership | 13.3K | — | 9 |
| AS398963US | LBUSD-PUBLIC-IP - Long Beach Unified School District | 13.3K | — | 5 |
| AS21803US | CEDAR-NETWORKS - Cedar Networks | 13.3K | — | 52 |
| AS30217US | DESYNC - Desync Networks | 13.3K | 4 | 10 |
| AS11406US | CIGNA-1 - CIGNA | 13.3K | — | 21 |
| AS11168US | SCC - SMART CHOICE COMMUNICATIONS, LLC | 13.3K | — | 20 |