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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS1553US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS401340US | HCIFIRSTASNAME - Hussey Communications Inc | 256 | — | 1 |
| AS401876US | WBC-ASN-02 - Weigel Broadcasting Co | 256 | — | 1 |
| AS46165US | RESOUND GENISYS-PUBLIC - Resound Networks, LLC | 256 | — | 1 |
| AS30111US | COMMAUTO - Commonwealth Automobile Reinsurers | 256 | — | 1 |
| AS47070US | VINEYARDCOLUMBUS - Vineyard Columbus | 256 | — | 1 |
| AS50842US | SERVERFORGE - ServerForge LLC | 256 | 64 | 2 |
| AS32445US | XHOP - XHOP LLC | 256 | — | 1 |
| AS511US | PRISMA HEALTH - Prisma Health | 256 | — | 1 |
| AS18893US | SELECT-EQUITY - Select Equity Group, Inc. | 256 | — | 1 |
| AS22507US | SPROUTS - Sprouts Farmers Market | 256 | — | 1 |
| AS401114US | COLUMBIACOUNTYWI - Columbia County | 256 | — | 1 |
| AS397791US | PROASSURANCE - ProAssurance Corporation | 256 | — | 1 |
| AS13718US | SOLUSLP - SOLUS ALTERNATIVE ASSET MANAGEMENT LP | 256 | — | 1 |
| AS401995US | ACH-ASN-01 - Arkansas Children's Hospital | 256 | — | 1 |
| AS18503US | CTRL-IT-ASN - Concept Imagineering LLC | 256 | — | 1 |
| AS26988US | ADAGE-TECH - Adage Technologies, Inc | 256 | 2 | 3 |
| AS934US | BSTI - Big Sky Tech & Internet, Inc. | 256 | 256 | 2 |
| AS30293US | SOUTHCO-AS30293 - SOUTHCO INC | 256 | — | 1 |
| AS397413US | SAISD - San Antonio Independent School District | 256 | — | 1 |
| AS54406US | CONVERMAX - Convermax Corp | 256 | — | 1 |
| AS62945US | CORNERSTONE - Cornerstone Information Systems, Inc. | 256 | — | 1 |
| AS11217US | CLM-ASN - Carter Ledyard & Milburn LLP | 256 | — | 1 |
| AS25913US | ASI-DCO-AS-109 - APPLIED SYSTEMS, INC | 256 | — | 1 |
| AS394525US | DF-INTERNET-TX - Dean Foods Company | 256 | — | 1 |
| AS20122US | NOS-NOG2 - NOS Network Operations Group | 256 | — | 1 |
| AS11527US | X0R - Xproxies | 256 | 65.5K | 2 |
| AS23439US | KQED-ORG - KQED Inc. | 256 | — | 1 |
| AS25973US | AS-GTT-25973 - PacketExchange, Inc | 256 | 1 | 2 |
| AS31927US | MPR-ASSOCIATES - MPR Associates | 256 | — | 1 |
| AS33103US | OPENMARKET-INC-2 - Infobip | 256 | — | 1 |
| AS46391US | AS46391 - Bassett Medical Center | 256 | — | 1 |
| AS40183US | BTL - Bell Techlogix | 256 | — | 1 |
| AS36128US | HCTC-205 - Hillsborough County Tax Collector | 256 | — | 1 |
| AS394549US | GEMAHS01 - GEMA/HS | 256 | — | 1 |
| AS400739US | COM-NOC - City of Mishawaka | 256 | — | 1 |
| AS403159US | SNAKE-RIVER-IT - Snake | 256 | — | 1 |
| AS17160US | NCOM-NA - Neofelis Communications | 256 | 4.1K | 3 |
| AS62799US | WU - THE WESTERN UNION COMPANY | 256 | — | 1 |
| AS397002US | SHARPSPRING-INC - Sharpspring Inc. | 256 | — | 1 |
| AS32999US | ECRI - ECRI | 256 | — | 1 |
| AS603US | EQUINIX-EC - Equinix, Inc. | 256 | 4.1K | 2 |
| AS394662US | UFAASNUM - Unified Fire Authority | 256 | 1 | 2 |
| AS55207US | IGLOO - June Slater | 256 | 2 | 3 |
| AS399798US | NOVANTAS-01 - Novantas, Inc. | 256 | 1 | 2 |
| AS393462US | COLLETTE-HEALTH - Collette Health, LLC | 256 | 1 | 2 |