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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| AURORA-HEALTH-CARE - Aurora Health Care, Inc. |
| 11.5K |
| — |
| 12 |
| AS36026US | AS-CHI-CORP - CommonSpirit Health | 11.5K | — | 18 |
| AS1661US | ANS-ATLANTA - Verizon Business | 11.5K | — | 31 |
| AS32040US | TRENTON-TELEPHONE - Trenton Telephone Company | 11.5K | — | 26 |
| AS53726US | NEXBA-1-BGP - neXband Communications. Inc. | 11.5K | — | 8 |
| AS40111US | PARKERFIBERNET-AS-ROUTE - Parker FiberNet, LLC | 11.5K | 65.5K | 18 |
| AS30175US | EPICOR - EPICOR | 11.5K | — | 32 |
| AS14237US | BEAMSPEED1 - Beamspeed LLC | 11.5K | 65.5K | 20 |
| AS33657US | CMCS - Comcast Cable Communications, LLC | 11.5K | 240 | 269 |
| AS21595US | BAXTER - Baxter Healthcare | 11.5K | — | 41 |
| AS13537US | MEGACOLO - Mega Colocation, Inc. | 11.5K | — | 45 |
| AS13567US | KMB1 - Kimberly-Clark Corporation | 11.5K | — | 13 |
| AS13739US | DATACENTER-IP - Datacenter IP, LLC | 11.5K | 65.5K | 22 |
| AS40898US | OECONNECT - Otsego Electric Cooperative, Inc. | 11.5K | — | 24 |
| AS400404US | SCREMC - STEUBEN COUNTY RURAL ELECTRIC MEMBERSHIP CORPORATION | 11.3K | — | 18 |
| AS396206US | FRANCISCANALLIANCE - Franciscan Alliance Inc | 11.3K | — | 18 |
| AS33234US | SJOBERGS-INC - Sjoberg's Inc | 11.3K | 65.5K | 13 |
| AS40923US | FID-SYS-RTP - FMR LLC | 11.3K | — | 44 |
| AS18552US | SPI-BGP-BDR - Sony Pictures Imageworks, Inc. | 11.3K | — | 5 |
| AS11693US | NULINK - WideOpenWest Finance LLC | 11.3K | — | 15 |
| AS18749US | PREMINC-INTER - Premier, Inc. | 11.3K | — | 11 |
| AS53830US | VPDC-1 - Otava, LLC | 11.3K | — | 18 |
| AS54502US | DATA-STREAM - Data Stream | 11.3K | 65.5K | 5 |
| AS395148US | PACLW - PACIFIC LIGHTWAVE, A CALIFORNIA CORPORATION | 11.3K | — | 25 |
| AS12189US | AS12189 - PhoenixNAP LLC | 11.3K | 4.9K | 32 |
| AS36067US | DCX-BGN-TI - DaimlerChrysler Corporation | 11.3K | — | 10 |
| AS63457US | EMPIRE-CONNECT - Liberty Connect | 11.3K | — | 22 |
| AS16491US | VIASAT - ViaSat, Inc. | 11.3K | 1 | 34 |
| AS13322US | FMR-AS3 - FMR LLC | 11.3K | — | 44 |
| AS14140US | AUBURN-ESSENTIAL-SERVICES - Auburn Essential Services | 11.3K | 65.5K | 20 |
| AS26725US | LCOM-NET - Liberty Communications | 11.3K | — | 18 |
| AS40845US | NTINET01 - NTINet Inc. | 11.3K | — | 14 |
| AS395597US | APOG-ATLANTA - Apogee Telecom Inc. | 11.3K | — | 40 |
| AS33635US | ARISTATA - Visionary Communications LLC | 11.3K | — | 19 |
| AS53831US | SQUARESPACE - Squarespace, Inc. | 11.3K | — | 13 |
| AS30530US | FMTCAS - Farmers Mutual Telephone Company | 11.3K | 65.5K | 20 |
| AS394065US | ESSENSYSINC - essensys Inc. | 11.3K | — | 26 |
| AS11971US | PFIZERNET-GROTON - Pfizer Inc. | 11.3K | — | 6 |
| AS16875US | AS16875 - AON Corporation | 11.3K | — | 29 |
| AS398779US | ACEHOST - Ace Host, LLC | 11.3K | 4.1K | 39 |
| AS393436US | SLVREC - San Luis Valley Rural Electric Cooperative, Inc. | 11.3K | — | 30 |
| AS19524US | COMERICA-INC - Comerica Incorporated | 11.3K | — | 44 |
| AS399244US | BLOOM-HOST - AME Hosting LLC | 11.3K | 24 | 26 |
| AS393278US | FRANKLIN-KY-FIBERNET - Electric Plant Board of the city of Franklin Kentucky | 11.3K | 65.5K | 23 |
| AS216211US | CYBERVERSE-BACKBONE CYBERVERSE LLC | 11.3K | 1 | 15 |
| AS393924US | RIGNET-ISP - RigNet Inc | 11.3K | 65.5K | 10 |
| AS10668US | LEE-ASN - Lee Enterprises, Incorporated | 11.3K | — | 6 |