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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) |
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.
| 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 |
| — |
| — |
| 0 |
| AS19506US | CLOUDMARK-PRD - Proofpoint, Inc. | — | — | 0 |
| AS19030US | HMH-19030 - HMH | — | — | 0 |
| AS23345US | WEBCORE - EvolveIP, LLC | — | — | 0 |
| AS18915US | MONKEY-US-01 - Surveymonkey Inc. | — | — | 0 |
| AS18906US | CONCORD-AS - Concord Management Ltd | — | — | 0 |
| AS18597US | RVBD - RIVERBED TECHNOLOGY, INC. | — | — | 0 |
| AS18991US | CTC-VIS-AS - Connecticut Children's Medical Center | — | — | 0 |
| AS20202US | CRUCIALP - CRUCIALP LLC | — | — | 0 |
| AS20104US | GOTO-OPS-AS - Goto Group, Inc. | — | — | 0 |
| AS19907US | NEUSTAR-AS6 - NeuStar, Inc. | — | — | 0 |
| AS19981US | AS-WFC-LHC-AZ-01 - WireFree Communications Inc. | — | — | 0 |
| AS19549US | SERVERSILO - HostPapa | — | — | 0 |
| AS22850US | PIT-US - PIT US | — | — | 0 |
| AS19392US | JCOM - J2 Cloud Services, LLC | — | — | 0 |
| AS5962US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS35848US | GRIZZLINK - 20C, LLC | — | 16 | 1 |
| AS179US | UMICH-AS-3 - University of Michigan | — | — | 0 |
| AS472US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS132US | WPAFB-CSD-NET-AS - Air Force Systems Networking | — | — | 0 |
| AS1915US | SEQUOIA-AS - National Science Foundation | — | — | 0 |
| AS1867US | DISN-PILOTNET13 - RTX BBN Technologies, Inc. | — | — | 0 |
| AS960US | ORTHOFIX-IDC - Orthofix Medical INC | — | — | 0 |
| AS2009US | BT-CLOUD-CONNECT - INFONET Services Corporation | — | — | 0 |
| AS22194US | SWITCH-COMMUNICATIONS - SWITCH, LTD | — | — | 0 |
| AS10555US | SCLI - Semi-Custom Logic, Inc | — | — | 0 |
| AS10272US | SSIS - South Seas Internet Services | — | — | 0 |
| AS10240US | MOTLEYFOOL - The Motley Fool, LLC. | — | — | 0 |
| AS12232US | PATHLINES-ATL - CatalystCloud LLC | — | — | 0 |
| AS13419US | HARDCASTLE-B2B - Peak6 Group LLC | — | — | 0 |
| AS11423US | CALREN-2 - CENIC | — | — | 0 |
| AS11420US | TRIBUNE-PUBLISHING-COMPANY - Tribune Publishing Company, LLC | — | — | 0 |
| AS10960US | CENTURYLINK-QC-MOE-TUCSON - CenturyLink Communications, LLC | — | — | 0 |
| AS11143US | OECONNECTION - OEConnection, LLC | — | — | 0 |
| AS22723US | UN - United Nations | — | — | 0 |
| AS22722US | SEVONE - IBM | — | — | 0 |
| AS19604US | IBM-RALEIGH-CL - IBM | — | — | 0 |
| AS10890US | PHILADELPHIA-NEWSPAPERS - Philadelphia Newspapers Incorporated | — | — | 0 |
| AS21583US | HOUSTON-COLO - Vonage Holdings, Inc. | — | — | 0 |
| AS21562US | IQUEST-LB - LightBound, LLC | — | — | 0 |
| AS20401US | HOSTWAY-1 - Ntirety, Inc. | — | — | 0 |
| AS20476US | RESERVED-IPADMIN - Level 3 Parent, LLC | — | — | 0 |
| AS25911US | US-REPSOLSERVICESCOMPANY-EX-TLM - Repsol Services Company | — | — | 0 |
| AS25828US | STATE-OF-IDAHO - State of Idaho | — | — | 0 |
| AS22762US | OFIDEN - Invesco Group Services, Inc. | — | — | 0 |
| AS17041US | AS-LRCOMM-ORIG - L.R. Communications, Inc. | — | — | 0 |
| AS22963US | AFINITI-AI - Afiniti, INC. | — | — | 0 |