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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| 1K |
| 1 |
| 3 |
| AS46505US | NIXIHOST - NixiHost.com Incorporated | 1K | 4.6K | 6 |
| AS398158US | CRAA-ASN-01 - Columbus Regional Airport Authority | 1K | — | 1 |
| AS400927US | BARGER-CREEK - Barger Creek Wireless | 1K | — | 1 |
| AS14722US | OPUS-INTERACTIVE-TX1 - Opus Interactive | 1K | 4.1K | 2 |
| AS5957US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 1K | 1 | 5 |
| AS16482US | PEAK10-LOU - Flexential Corp. | 1K | — | 2 |
| AS46588US | CDW-CONFIGS-01 - CDW | 1K | — | 4 |
| AS33015US | LASCASN - Los Angeles Superior Court of California | 1K | — | 4 |
| AS29963US | MARYKAY-NA - Mary Kay Inc. | 1K | — | 2 |
| AS401037US | APOG-WVU - Apogee Telecom Inc. | 1K | — | 3 |
| AS33467US | SJRMC-NJ - St. Joseph's Medical Center | 1K | — | 1 |
| AS63109US | FCEMC-NETWORKS - Four County Electric Membership Corporation | 1K | — | 1 |
| AS54746US | KLAZO-ASN - KLAZO, LLC | 1K | — | 4 |
| AS7330US | INTERNETLABS - Internet Laboratories, Inc. | 1K | — | 1 |
| AS40729US | ECDC2013 - AECOM | 1K | — | 2 |
| AS33625US | CORTEVA - Corteva AgriScience LLC | 1K | — | 3 |
| AS400525US | AM-PRODNET-01 - Audible Magic | 1K | — | 3 |
| AS46457US | ESD112 - ESD 112 | 1K | — | 3 |
| AS36022US | CHK-OKC - Expand Operating LLC | 1K | — | 1 |
| AS25822US | TU-ASN-01 - Tiffin University | 1K | — | 4 |
| AS46978US | BYTESIZE - Bytesize Internet LLC | 1K | 6 | 10 |
| AS399656US | ETHX-BIZ - ETHX | 1K | — | 1 |
| AS25786US | NE-WEST-11 - Newegg.com | 1K | — | 4 |
| AS18923US | TWRS-FTW - Towerstream I, Inc. | 1K | 1 | 2 |
| AS395720US | KUM-AND-GO - Kum & Go, L.C. | 1K | — | 3 |
| AS54993US | OPSRP-IP-1 - OpsRamp, LLC | 1K | — | 4 |
| AS401999US | PUBLIC-SAFETY-NET-EXCG - Fairfax County NCR | 1K | — | 4 |
| AS63374US | INCREDIBLETECH - Incredible Technologies Inc | 1K | — | 4 |
| AS400492US | DP-NET-ASN-01 - DataPerk, LLC | 1K | — | 3 |
| AS8232US | GXS-EUROPE GXS International Inc. | 1K | — | 2 |
| AS22401US | FC-POTAWATOMI-MKE-BINGO-CASINO - Potawatomi Bingo Casino | 1K | — | 3 |
| AS14079US | RTB-ASN-01 - Radio Toolbox, LLC | 1K | 4.1K | 2 |
| AS33506US | CPINETWORKS-AS - COMMPUTERCATIONS | 1K | — | 1 |
| AS4451US | ASN1 - 1199SEIU National Benefit Funds | 1K | — | 4 |
| AS11212US | COUNTY-OF-SONOMA - COUNTY OF SONOMA | 1K | — | 3 |
| AS14627US | NOIP-VITAL - Vitalwerks Internet Solutions, LLC | 1K | 16 | 4 |
| AS402463US | NOVALINK-FIBER-01 - Novalink | 1K | — | 1 |
| AS36823US | MPHC - Martin's Point HealthCare | 1K | — | 2 |
| AS402148US | TEYVAT-CONTINENT - Teyvat Continent LLC | 1K | — | 1 |
| AS396056US | EAGLE-TELEPHONE-ASN - EAGLE TELEPHONE SYSTEM INC | 1K | 4.1K | 2 |
| AS11501US | VISTAASN - Vista Radiology, P.C. | 1K | — | 3 |
| AS36644US | FVOICE-001 - 4Voice LLC | 1K | — | 4 |
| AS400245US | AS400245 - AlphaCentri Corporation | 1K | 1 | 5 |
| AS30118US | MAS-CTDC - Mizuho Americas Services LLC | 1K | — | 4 |
| AS16708US | TELCOM-SYSTEMS - Telcom Systems LLC | 1K | — | 1 |
| AS27227US | DILLARDS-STORE-SERVICES - Dillard's Store Services Inc. | 1K | — | 1 |