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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,285 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,310 |
| 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.
32,244 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,356 |
| 1K |
| — |
| 4 |
| AS14042US | COMCAST-COMM-MGT-1 - Comcast Cable Communications Management, LLC | 1K | — | 2 |
| AS33010US | INTERCHURCH - The Interchurch Center | 1K | — | 1 |
| AS55215US | TRINITY-HEALTH - Trinity Health | 1K | — | 3 |
| AS7909US | CARMAX-AS - CarMax Enterprise Services, LLC | 1K | — | 3 |
| AS25731US | KNOX-BOX-LLC - Knox Box Networks | 1K | 256 | 5 |
| AS23096US | CNSL-32-23096 - Controlled Networks Solution LLC | 1K | — | 4 |
| AS32224US | EMPIRE - Empire Southwest | 1K | — | 4 |
| AS401673US | BRTEL-USAS1 - Bullroar Telecom, Ltd. | 1K | 4.6K | 7 |
| AS398118US | VITANET-DATA - Commonwealth of Virginia Office of the Attorney General | 1K | — | 4 |
| AS401405US | CRUSOE-ASN-02 - CRUSOE ENERGY SYSTEMS LLC | 1K | — | 3 |
| AS31837US | LION-BILLERICA - Lionbridge Technologies, Inc. | 1K | — | 4 |
| AS64212US | ADVANTAGE - Advantage Sales & Marketing LLC | 1K | — | 4 |
| AS401914US | INTERCODING-NET - INTERCODING | 1K | — | 3 |
| AS63149US | AS-SILO - ScienceLogic, Inc | 1K | — | 4 |
| AS16388US | AS-PTI - Protronics Technologies, Inc. | 1K | — | 1 |
| AS18660US | KSUONLINE-I2 - Kentucky State University | 1K | — | 1 |
| AS54021US | FIXFLYER1 - FIX FLYER, LLC | 1K | — | 4 |
| AS26237US | NUVASIVE-HQ - NuVasive Inc. | 1K | — | 3 |
| AS11297US | LIPSCOMB - Lipscomb University | 1K | 16 | 2 |
| AS26254US | 568721-017489901135-1 - Mail2world INC. | 1K | — | 4 |
| AS14625US | PGA-TOUR - PGA Tour | 1K | — | 4 |
| AS62568US | BIC2ASN1 - Brother International Corporation | 1K | — | 4 |
| AS26522US | SU-ASN-1 - Stevenson University | 1K | 4.1K | 5 |
| AS399868US | SNAPCOM - Snapcom | 1K | 5 | 9 |
| AS62541US | VSH-ASN - Vishay Intertechnology, Inc. | 1K | — | 3 |
| AS399549US | AMS-MULTIHOME-01 - Access Management Services, LLC | 1K | — | 3 |
| AS15015US | SGC - Spring Grove Communications | 1K | — | 2 |
| AS393577US | TRITAN-DEVELOPMENT - Tritan Development | 1K | 8.2K | 11 |
| AS395994US | VECC911 - VECC | 1K | — | 2 |
| AS19808US | ASNBLK-VTLA2 - NTT Global Networks Incorporated | 1K | — | 4 |
| AS11826US | RISS2 - Regional Information Sharing Systems | 1K | — | 3 |
| AS32715US | ICCNET - ILLINOIS CENTRAL COLLEGE | 1K | — | 3 |
| AS30184US | RESI-BGP1 - RESI | 1K | — | 1 |
| AS53425US | NEMC-WAN - North Carolina Electric Membership Corp | 1K | — | 4 |
| AS397444US | AS-OKI - Overkill Interbuzz LLC | 1K | 10 | 14 |
| AS23351US | ANSYSNH - Ansys, Inc. - Lebanon NH | 1K | — | 1 |
| AS11746US | WAGGENER-EDSTROM - Waggener Edstrom Worldwide, Inc. | 1K | — | 4 |
| AS138947US | NTC-AS-APC - NORTHERN TRUST CORPORATION | 1K | — | 3 |
| AS17304US | VWC-NET - Vegas WiFi | 1K | — | 4 |
| AS400451US | CMTC - Curium Technologies | 1K | — | 1 |
| AS25864US | ZAYO-CLOUD-TOR01 - Latisys-Irvine, LLC | 1K | 2 | 6 |
| AS40834US | CHARLES-RIVER-LABORATORIES-INC-SHR - Charles River Laboratories, Inc. | 1K | — | 1 |
| AS14300US | NAF-SNAP7 - New American Funding | 1K | — | 3 |
| AS14893US | CHS-MI - Covenant Medical Center, Inc. | 1K | — | 1 |
| AS207020US | ProMarketingCentral Pro Marketing Central LLC | 1K | 524.3K | 3 |
| AS401276US | UNITEDCLOUD - United Cloud Inc | 1K | — | 4 |