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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 |
| — |
| — |
| 0 |
| AS394454US | WB-AS-US - Withers Bergman LLP | — | — | 0 |
| AS394458US | DATAMINR-1 - Dataminr | — | — | 0 |
| AS394641US | 724IT-BGP-COLO - AMA NETWORKS | — | — | 0 |
| AS394680US | ESSEXTEL - EssexTel, Inc. | — | — | 0 |
| AS394717US | SGO-BROADBAND - S-Go Video and Internet | — | — | 0 |
| AS394758US | PFE-HSP - Pfizer Inc. | — | — | 0 |
| AS394789US | WNMIAS - Western National Mutual Insurance Company | — | — | 0 |
| AS394822US | WGH-ASN-1 - Wabash General Hospital District | — | — | 0 |
| AS394842US | AFS-5 - AMERIPRISE FINANCIAL SERVICES, LLC | — | — | 0 |
| AS394931US | ROSWELL - PRIMERICA LIFE INSURANCE COMPANY | — | — | 0 |
| AS395012US | AURORA - Aurora Operations, Inc. | — | — | 0 |
| AS395077US | ORION-STELLAR - Stellar Technologies, LLC | — | — | 0 |
| AS395108US | FORWARDCORP-ASN - Forward Corporation | — | — | 0 |
| AS395121US | ATT-ESIN - AT&T Services, Inc. | — | — | 0 |
| AS395621US | CONAIR-EW - Conair Corporation | — | — | 0 |
| AS395632US | VMW-ATLANTA - Avago Technologies U.S. Inc. | — | — | 0 |
| AS395749US | KELSER-CORP - Kelser Corporation | — | — | 0 |
| AS395796US | PEAK-INTERNET-BACKUP - Peak Internet | — | — | 0 |
| AS396030US | G2WS - G2 Web Services LLC | — | — | 0 |
| AS396124US | ETHERIC-SOCAL - Etheric Networks, Inc. | — | — | 0 |
| AS396166US | WKBL-1 - World Knowledge Bank LLC | — | — | 0 |
| AS396201US | CCCAS1 - Contra Costa County | — | — | 0 |
| AS396551US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396567US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396584US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396587US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396617US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396622US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396671US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396698US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396717US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396734US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396740US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396774US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396807US | VRSN-AC50-340 - VeriSign Global Registry Services | — | — | 0 |
| AS396925US | B2EQUITY-AS1 - B2 Equity Holdings, inc. | — | — | 0 |
| AS397004US | BRUNE1-ARIN - The Reynolds and Reynolds Company | — | — | 0 |
| AS397036US | WCL-151 - Webcor Builders | — | — | 0 |
| AS397049US | TELIGENTIP-AS - TeligentIP Inc. | — | — | 0 |
| AS397086US | VAULT-HOST-HOUSTON - Vault Host | — | — | 0 |
| AS397111US | AS-AIB-1 - AIB | — | — | 0 |
| AS397186US | CM-IX - CMSInter.net LLC | — | — | 0 |
| AS397199US | VRSN-AC28 - VeriSign Global Registry Services | — | — | 0 |
| AS397272US | DAU - Defense Acquisition University | — | — | 0 |
| AS397306US | PJU-01 - Papa John's USA, Inc. | — | — | 0 |
| AS397387US | TEAM-SAN-JOSE - Team San Jose | — | — | 0 |