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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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. | 218M | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 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 | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS46711US | TRUEVALUE-ASN-01 - True Value Company, L.L.C. | 256 | — | 1 |
| AS399990US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 256 | — | 1 |
| AS401297US | IGLOO - June Slater | 256 | 1 | 2 |
| AS63449US | SEABOARDMAIRNE-AS - Seaboard Marine, Ltd. Inc. | 256 | — | 1 |
| AS397590US | MBBC-AS-01 - Milwaukee Brewers Baseball Club, LP | 256 | — | 1 |
| AS394729US | NPIASN - NeoPollard Interactive LLC | 256 | — | 1 |
| AS400240US | NEEBUNET - NEEBU Networks | 256 | 1 | 2 |
| AS23512US | RGTS-SJ - ConvergeOne Unified Technology Solutions, Inc. | 256 | — | 1 |
| AS401925US | GRAPE-AWS-1 - Grapevine Labs LLC | 256 | — | 1 |
| AS19594US | SALEMHOSPITALASN - Salem Hospital | 256 | — | 1 |
| AS46705US | ZOOM-ONLINE - Zoom Tech Arizona Limited | 256 | 65.5K | 2 |
| AS31807US | RACKALOHA1 - RackAloha, LLC | 256 | 16 | 2 |
| AS22050US | SDLANCPA - School District of Lancaster | 256 | — | 1 |
| AS40411US | CITYOFCONCORD - City of Concord | 256 | — | 1 |
| AS13714US | AS-AFILIAS-SYD1 - Afilias, Inc. | 256 | — | 1 |
| AS397001US | CSISD - College Station Independent School District | 256 | — | 1 |
| AS27228US | PHILLYIX-INFRA - Philadelphia Internet Exchange | 256 | 4.1K | 2 |
| AS394372US | APOG-UNION-MC - Apogee Telecom Inc. | 256 | — | 1 |
| AS15268US | MDARCHIVES - Maryland State Archives | 256 | — | 1 |
| AS62812US | THENATUREORG-1 - The Nature Conservancy | 256 | — | 1 |
| AS395396US | AAH-OAHU - Alert Alarm Hawaii | 256 | — | 1 |
| AS399814US | LAER-AS-LHR1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS207169US | Brayden-Net Brayden Herrell | 256 | — | 1 |
| AS394318US | TELECOMMUNICATION-SYSTEMS-INC - Telecommunication Systems Inc. | 256 | — | 1 |
| AS398126US | LPSO - Computer Sales & Services, Inc. | 256 | — | 1 |
| AS23926US | YAHOO-INZ - INZ Edge site | 256 | 2 | 3 |
| AS396405US | AC225 - Amida Care Inc | 256 | — | 1 |
| AS35966US | AEW-AS - AEW Capital Management LP | 256 | — | 1 |
| AS400722US | SGP-NIDR - PIMCO | 256 | — | 1 |
| AS843US | F5-XC-NAE - F5, Inc. | 256 | — | 1 |
| AS18543US | ION-NEWYORKCITY-NYC - ION MEDIA NETWORKS | 256 | — | 1 |
| AS398832US | STRAYANET-01 - Strayanet LLC. | 256 | — | 1 |
| AS19862US | BNB-22-AS - Bridgehampton National Bank | 256 | — | 1 |
| AS397620US | CITYMENLOPARK - City of Menlo Park | 256 | — | 1 |
| AS18445US | POLYONE-CORPORATION - PolyOne Corporation | 256 | — | 1 |
| AS7816US | CTC - Concurrent Technologies Corporation | 256 | — | 1 |
| AS54547US | BCCLS-AS - Bergen County Cooperative Library System | 256 | — | 1 |
| AS53261US | APFCU-1 - Affinity Plus Federal Credit Union | 256 | — | 1 |
| AS396212US | AIMS-COMMUNITY-COLLEGE - Aims Community College | 256 | — | 1 |
| AS400282US | UPX - UPX US LLC | 256 | 65.5K | 3 |
| AS395694US | GSO-INTERNET - Qorvo US, Inc | 256 | — | 1 |
| AS40771US | IML - Illinois Mutual Life Insurance Company | 256 | — | 1 |
| AS11874US | COLUMBUSREGIONALHOSPIAL - Columbus Regional Hospital | 256 | — | 1 |
| AS205811US | sfm-pop Supply Frame, Inc. | 256 | — | 1 |
| AS63184US | MORRISTOWN-HQ - Valley National Bank | 256 | — | 1 |
| AS26629US | JFMC - Jewish Federation of Metropolitan Chicago | 256 | — | 1 |