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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,291 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,268 |
| 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 | 411 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,732 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,968 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,335 |
| — |
| — |
| 0 |
| AS10446US | AMIGO-NET - Zero Error Networks | — | — | 0 |
| AS10456US | ATT-DISCNET - AT&T Services, Inc. | — | — | 0 |
| AS10470US | ASN-PCORDER - pcOrder.com | — | — | 0 |
| AS10475US | TBAX-AS-2025 - Tampa Bay Access Exchange LLC | — | — | 0 |
| AS10522US | BLUESTAR - BlueStar Communications | — | — | 0 |
| AS10589US | HALNET - Houston Area League of PC Users, Inc. (HAL-PC) | — | — | 0 |
| AS10608US | ENS-INTERWEB - Enterprise Network Systems | — | — | 0 |
| AS10627US | CP-AS-AS10627 - Critical Path, LLC | — | — | 0 |
| AS10656US | ECOL - Eau Claire Press Company | — | — | 0 |
| AS10663US | DISCOVERNET-ASN1 - DiscoverNet, Incorporated | — | — | 0 |
| AS10667US | FSIWEBS-NET1-AS - Fidelity National Information Services, Inc. | — | — | 0 |
| AS10766US | ASN-TAIS-CSE - Toshiba America Information Systems, CSE | — | — | 0 |
| AS10826US | CENTURYLINK-QC-MOE-PHOENIX - CenturyLink Communications, LLC | — | — | 0 |
| AS10854US | AIRMEDIA - AirMedia | — | — | 0 |
| AS11025US | COMCAST-HOUSTON - Comcast Cable Communications, LLC | — | — | 0 |
| AS11094US | RUTGERS-RBHS - Rutgers, The State University | — | — | 0 |
| AS11194US | MODMC-11194-AS - MOD Mission Critical, LLC | — | — | 0 |
| AS11324US | AS11324 - BRFHH SHREVEPORT, L.L.C. | — | — | 0 |
| AS11461US | XX - T-Mobile USA, Inc. | — | — | 0 |
| AS11535US | NET-UALNET-AS - United Airlines | — | — | 0 |
| AS11538US | CENTURYLINK-QC-MOE-SPOKANE - CenturyLink Communications, LLC | — | — | 0 |
| AS11551US | SINEP-BROADST-AS - Frontline Communications | — | — | 0 |
| AS11759US | SERVERIUM - Serverium Tech LLC | — | — | 0 |
| AS11771US | SYNACOR-CHARTER - Synacor, Inc. | — | — | 0 |
| AS11774US | IQNT-BROAD-6-11774 - Inteliquent, inc. | — | — | 0 |
| AS11885US | DYNAMICPACKET - DYNAMIC PACKET CORP | — | — | 0 |
| AS11912US | TAMUSIBT-NET - Texas A&M University System | — | — | 0 |
| AS11927US | ADVANCE-GW - Advance Publications Inc. | — | — | 0 |
| AS11950US | MFXROA-2 - MFX ROANOKE, INC | — | — | 0 |
| AS11953US | ARMLS - ARMLS | — | — | 0 |
| AS11963US | ASN-PENNWELL - Clarion Events | — | — | 0 |
| AS12002US | GREAT-POINT-PARTNERS - Great Point Partners, LLC | — | — | 0 |
| AS12006US | BROADVIEWNET-AS-12006 - Windstream Communications LLC | — | — | 0 |
| AS12068US | RC-ASN - Intrado Life & Safety, Inc. | — | — | 0 |
| AS12139US | AMNET - AMNET US LLC | — | — | 0 |
| AS12172US | LAKEMARY-ASN-12172 - Fiserv Solutions, LLC | — | — | 0 |
| AS12241US | NCTCNET-AS1 - Hamilton Telecommunications | — | — | 0 |
| AS13385US | COMCAST-TELECOMM - Comcast Cable Communications, LLC | — | — | 0 |
| AS13512US | MONROETEL-NOC - Monroe Telephone Co. | — | — | 0 |
| AS13520US | AS-CBC - CAMBRIDGE BANDWIDTH CONSORTIUM, INC. | — | — | 0 |
| AS13604US | FLC-DUN - OTI Fiber LLC | — | — | 0 |
| AS13623US | ISTOCKPHOTO - ISTOCKPHOTO INC. | — | — | 0 |
| AS13632US | VWRSP - VWR International, LLC | — | — | 0 |
| AS13637US | NETSTAR - Logix | — | — | 0 |
| AS13640US | ONECOM-CTC - Windstream Communications LLC | — | — | 0 |
| AS13701US | MPTF-ASN - Motion Picture and Television Fund | — | — | 0 |