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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 | 23,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,143 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 | 3,820 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,994 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,278 |
| FOLFY-ASN Nolan Trapp |
| — |
| 1 |
| 1 |
| AS21988US | HENDRICK-AUTO-GROUP - Hendrick Automotive Group | — | — | 0 |
| AS213774US | NANCYANDSYSROM NANCYANDSYSROM LLC | — | 1 | 1 |
| AS18581US | ALLIANZLIFE - Allianz Technology of America, Inc. | — | — | 0 |
| AS401947US | TRIAD-PATHFINDERS - Triad Pathfinders LLC | — | 3 | 3 |
| AS55223US | BGP-NETWORKS-LLC - BGP Networks LLC | — | 2 | 2 |
| AS27494US | NATL-MACH10 - Performive LLC | — | — | 0 |
| AS177US | UMICH-AS-1 - University of Michigan | — | 2 | 2 |
| AS32290US | RUSTNET - RUST COLLEGE | — | — | 0 |
| AS575US | DNIC-AS-00575 - Headquarters, USAISC | — | 256 | 1 |
| AS29717US | OMEDA-29717 - Omeda Communications | — | — | 0 |
| AS400395US | HONGSHIN-AS-NA - Hongshin, Inc. | — | 1 | 1 |
| AS30266US | RF-SJC-DATACENTER - Rodan & Fields LLC | — | — | 0 |
| AS219525US | DaleNetworks Jevin Dale | — | 1 | 1 |
| AS30531US | TELINTA-AS1 - Telinta, Inc. | — | — | 0 |
| AS402653US | WCUUSD-2026-ASN - Washington | — | 16 | 1 |
| AS30333US | ASCD - ASCD | — | — | 0 |
| AS33063US | AS-CUBIT - Cubit Computer Ltd. Liability Co. | — | 272 | 2 |
| AS19026US | XO-ASN14 - Verizon Business | — | — | 0 |
| AS10725US | GENENTECH - Genentech, Inc. | — | 69.9K | 3 |
| AS3754US | NYSERNET3-AS - NYSERNet | — | 1 | 1 |
| AS60614US | OwO-NETWORK OwO Network, LLC | — | 16 | 1 |
| AS4156US | USDA-1 - USDA | — | — | 0 |
| AS57266US | AHLEX Alexander Huynh | — | 1 | 1 |
| AS4068US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS402899US | PTLHL - Prestige | — | 524.3K | 1 |
| AS35920US | HOUIX - HOUIX | — | — | 0 |
| AS32568US | AS-ASN-1 - Nasdaq, Inc. | — | — | 0 |
| AS63101US | AFLYCLOUD-NETWORK - AFLY CLOUD LLC | — | 2 | 2 |
| AS19897US | IQNT-BROAD-6-19897 - Inteliquent, inc. | — | — | 0 |
| AS395887US | RYAMER-ENTERPRISE - Ryamer, LLC | — | 256 | 1 |
| AS396303US | NATOLAB-LEGACY - Black Mesa Corporation | — | 258 | 3 |
| AS14714US | GESTALT - Gestalt | — | 1 | 1 |
| AS36245US | SEV1TECH-1-ASN-1 - Sev1Tech | — | — | 0 |
| AS61387US | Cloudco-LLC Cloudco LLC | — | 1 | 1 |
| AS33742US | TELX-SFO - Telx | — | — | 0 |
| AS142130US | NICONET-AS-US - NICHONET Inter-Continental Hosting Operation Network | — | 20 | 4 |
| AS199465US | feiya FeiYa Network LTD. | — | 512 | 1 |
| AS5669US | VIA-NET-WORKS-AS - GTT Americas, LLC | — | 256 | 1 |
| AS30126US | ISC-F-AS - Internet Systems Consortium, Inc. | — | — | 0 |
| AS200360US | FOLF-SYSTEMS-AS Cooper Greer | — | 23 | 5 |
| AS30106US | ANCOR - Ancor Information Management | — | — | 0 |
| AS17045US | NGA911-CALI-A - NGA 911 | — | 6 | 2 |
| AS29847US | SI-AS1 - Screws Industries, Inc. | — | — | 0 |
| AS203069US | Thomas-Brown Thomas Riley Brown | — | 65.8K | 6 |
| AS33612US | TUMBLR - Yahoo Holdings Inc. | — | — | 0 |
| AS213073US | BYTESIZE Bytesize Internet LLC | — | 1 | 1 |