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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 14.6K |
| — |
| 4 |
| AS400951US | AKARI-NETWORKS - Akari Networks LLC | 14.6K | — | 40 |
| AS7359US | CENTURYLINK-SPA-ZUNI - CenturyLink Communications, LLC | 14.6K | 1 | 5 |
| AS22438US | CLEAR-RATE-COMMUNICATIONS - Clear Rate Communications, Inc. | 14.6K | 65.5K | 11 |
| AS46694US | ASN-SPTC - South Plains Telephone Cooperative, Inc. | 14.6K | 65.5K | 19 |
| AS22794US | AQR - AQR CAPITAL MANAGEMENT LLC | 14.3K | — | 14 |
| AS55145US | ECVTD-55145 - ECFiber | 14.3K | — | 9 |
| AS400521US | OMNI-FIBER-TX - Omni Fiber | 14.3K | 69.6K | 6 |
| AS4015US | CENTURYLINK-LEGACY-QWEST-SPA-OMAHA - CenturyLink Communications, LLC | 14.3K | 1 | 5 |
| AS36378US | NYIT-AS - New York Institute of Technology | 14.3K | — | 4 |
| AS22878US | ASACENET1 - ACENET, INC. | 14.3K | — | 5 |
| AS21669US | NJ-STATEWIDE-LIBRARY-NETWORK - New Jersey State Library | 14.3K | — | 25 |
| AS63178US | MPRTC-ISP - Mid-Plains Rural Telephone Cooperative, Inc. | 14.3K | — | 29 |
| AS27365US | CENGAGE-OHCIN - Cengage Learning, Inc. | 14.3K | — | 28 |
| AS12178US | INTERNAP-2BLK - Unitas Global | 14.3K | 65.5K | 8 |
| AS13765US | NEDELCO - Nedelco Inc. | 14.3K | 65.5K | 5 |
| AS26848US | PFG-ASN-1 - Principal Financial Group, Inc. | 14.3K | 4.1K | 24 |
| AS1423US | RAINBOW-RTCA - Rainbow Communications, L.L.C. | 14.3K | — | 4 |
| AS10367US | FIBERCAST - Fibercast Corporation | 14.3K | — | 26 |
| AS55214US | COAST - Coast Communications Company | 14.3K | — | 15 |
| AS33097US | VOLOCU - Volo Broadband | 14.3K | — | 18 |
| AS395337US | MACST-VEGAS - MacStadium, Inc. | 14.3K | 8.2K | 12 |
| AS14188US | ASHLANDFIBERNETWORK - Ashland Fiber Network | 14.3K | — | 11 |
| AS40755US | PROTEK-COMMUNICATIONS - ProTek Communications, LLC | 14.3K | — | 11 |
| AS19215US | ENERGIZE - PES Energize | 14.3K | — | 29 |
| AS21922US | WEBNET - WorldSpice Technologies | 14.3K | 65.5K | 12 |
| AS4459US | KDDIA-NET - KDDI America Inc. | 14.3K | 1 | 23 |
| AS40098US | CASNET - Community Antenna Service, Inc. | 14.3K | 98.3K | 16 |
| AS11516US | ASN-ESB - Eastern Suffolk BOCES | 14.3K | — | 56 |
| AS15317US | SERVEREL-AS - Serverel Inc. | 14.3K | 65.5K | 7 |
| AS27552US | TWDX - TowardEX Technologies International, Inc. | 14.3K | 69.9K | 16 |
| AS32701US | AS-VANGUARD - The Vanguard Group, Inc. | 14.3K | — | 56 |
| AS33652US | CMCS - Comcast Cable Communications, LLC | 14.1K | 149 | 181 |
| AS26857US | TRUSTCOMM-AS - TrustComm, Inc. | 14.1K | — | 23 |
| AS25888US | HPINC - HP Inc. | 14.1K | — | 31 |
| AS39944US | TNA - Telecom North America Inc. | 14.1K | 590.8K | 50 |
| AS30640US | ETHERIC - Etheric Networks, Inc. | 14.1K | 65.5K | 14 |
| AS33136US | OZARK-FIBER - Ozark Fiber, LLC | 14.1K | — | 22 |
| AS60558US | SECUREDSERVERS-EU PHOENIX NAP, LLC. | 14.1K | 259 | 33 |
| AS32160US | CTIFIBER - CTI Fiber | 14.1K | 65.5K | 14 |
| AS206766US | PROXYWING Travchis LLC | 14.1K | — | 40 |
| AS25840US | CASCADE-ACCESS-LLC-CA-ESTOR1 - Cascade Access, LLC | 14.1K | — | 14 |
| AS25694US | ATOMIC - Atomic Data LLC | 13.8K | 65.5K | 8 |
| AS22768US | SYNERGYBROADBAND-MI-02 - SYNERGY BROADBAND | 13.8K | 7 | 55 |
| AS30437US | GE-MS003 - General Electric Company | 13.8K | — | 51 |
| AS22765US | NELSONVILLE-TVCABLE - Nelsonville TV Cable Inc | 13.8K | — | 24 |
| AS36776US | FIVE9 - Five9 Inc. | 13.8K | — | 45 |