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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. | 218M | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| 256 |
| — |
| 1 |
| AS54451US | FCWAPUBLIC - Fairfax Water | 256 | — | 1 |
| AS53472US | CKW-3 - City of Kirkland Washington | 256 | — | 1 |
| AS397774US | CBDL-DFW1-AS1 - Covered Bridge Data, LLC | 256 | 4.1K | 2 |
| AS32318US | CHSDC - Center for Hellenic Studies | 256 | — | 1 |
| AS396229US | EQUUS - Equus Capital Partners, Ltd. | 256 | — | 1 |
| AS399766US | LOOK-TO-THE-RIGHT - Look To The Right, LLC | 256 | — | 1 |
| AS29701US | CUTCO-NETWORK - Cutco Corporation | 256 | — | 1 |
| AS399328US | ALLCOM-TELECOM-AIRCOM - Allcom Telecom, Inc. | 256 | — | 1 |
| AS20230US | CARRINGTON-MS-LLC-2007 - Carrington Mortgage Holdings, LLC | 256 | 1 | 2 |
| AS17080US | CHUUNILAB-01 - Chuunilab Corp. | 256 | 1 | 2 |
| AS14666US | SPIRIT1 - SpiritBank | 256 | — | 1 |
| AS33095US | MAYER-NETWORKS - Mayer Networks Inc | 256 | — | 1 |
| AS399498US | PRIVATE-NETWORKS - Private Networks Labs LLC | 256 | — | 1 |
| AS899US | INTRTEL - Intrepid Telecom, Inc. | 256 | 256 | 2 |
| AS394076US | HIGHRISE-ASN1 - HIGHRISE AI | 256 | — | 1 |
| AS54737US | LINDTUS - Lindt & Sprungli (USA), Inc. | 256 | — | 1 |
| AS54445US | DIERBERGS - Dierbergs | 256 | — | 1 |
| AS401627US | POW-VA-GOV - County of Powhatan | 256 | — | 1 |
| AS64229US | ALASKA - Byte Networking LLC | 256 | — | 1 |
| AS15059US | CENLAR-FSB-2020 - Cenlar FSB | 256 | — | 1 |
| AS7181US | AS-TIERP-7181 - TierPoint, LLC | 256 | — | 1 |
| AS461US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 256 | — | 1 |
| AS397271US | BCG - Blount County Government | 256 | — | 1 |
| AS40842US | ANB-WF - American National Bank | 256 | — | 1 |
| AS914US | MXAK-JNU-AK - MXAK | 256 | — | 1 |
| AS401758US | DDBURR - DD BURR INVESTMENT COMPANY LLC | 256 | — | 1 |
| AS401153US | AGVANTAGE-HOSTING-01 - AgVantage Software, Inc | 256 | — | 1 |
| AS393225US | ARIN-PFS-IAD - ARIN Operations | 256 | 1 | 2 |
| AS63487US | FELLOWES-ASN - Fellowes Inc. | 256 | — | 1 |
| AS46740US | SWISHER-INTERNATIONAL - Swisher International, Inc. | 256 | — | 1 |
| AS54350US | GALLATINSTEEL - Gallatin Steel Company | 256 | — | 1 |
| AS399367US | KIRKLAND-ELLIS-HU - Kirkland & Ellis LLP | 256 | — | 1 |
| AS13957US | MNAA - Metropolitan Nashville Airport Authority | 256 | — | 1 |
| AS54436US | HSD-WA-401 - Highline School District | 256 | — | 1 |
| AS400239US | DESCHUTES - Deschutes County | 256 | — | 1 |
| AS396446US | KESTRAFINANCIAL - KESTRA FINANCIAL, INC | 256 | — | 1 |
| AS27590US | HMSRACING - Hendrick Motorsports | 256 | — | 1 |
| AS395699US | ULINECOM - Uline | 256 | — | 1 |
| AS53778US | BCML-ASN - Berenberg Capital Markets, LLC | 256 | — | 1 |
| AS29966US | VGRS-AC22 - VeriSign Global Registry Services | 256 | — | 1 |
| AS394675US | LITTEN-COMMUNICATIONS-01 - Litten Communications LLC | 256 | — | 1 |
| AS394532US | INAZMA - TECPRESSO INC. | 256 | — | 1 |
| AS14847US | PECKSERVERS-LLC-IP-ROUTING - Peck Servers, LLC | 256 | 256 | 2 |
| AS62737US | PARINC - Psychological Assessment Resources, Inc. | 256 | — | 1 |
| AS30597US | AMBEST-ASN - A.M. Best Company | 256 | — | 1 |
| AS400028US | ASBURY-UNIVERSITY-AS01 - Asbury University | 256 | — | 1 |