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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 |
| 1.5K |
| 65.5K |
| 4 |
| AS62791US | DENOVOVENTURESLLC - DENOVO VENTURES LLC | 1.5K | — | 4 |
| AS402443US | AS-SIMPL-001 - SimpliFiber | 1.5K | — | 2 |
| AS398561US | CONASERVICES - CONA | 1.5K | — | 4 |
| AS13812US | 1999FISHERSYS - Fisher Scientific | 1.5K | — | 6 |
| AS18495US | NOVANT-AS1 - Novant Health Inc. | 1.5K | — | 6 |
| AS40185US | JUNCT - Junction Networks, Inc. | 1.5K | 12 | 18 |
| AS33730US | BAC-AS-LIB-EXTERNAL - Bank of America, National Association | 1.5K | — | 3 |
| AS53928US | FORTINET-53928 - Fortinet Inc. | 1.5K | — | 6 |
| AS394378US | NMICA-01 - NMICA, LLC | 1.5K | — | 3 |
| AS30595US | URBANOUT - Urban Outfitters, Inc. | 1.5K | — | 6 |
| AS27448US | KAYENTA - Kayenta Technologies | 1.5K | 65.5K | 3 |
| AS19880US | REALCOMPII - REALCOMP II LTD. | 1.5K | — | 6 |
| AS54187US | ECINET2 - EZE Castle Integration Inc. | 1.5K | 65.5K | 5 |
| AS11862US | GSIC-NV - Radial, Inc. | 1.5K | — | 6 |
| AS21681US | MPOWER-POWERED-BY-MEC - Mecklenburg Electric Cooperative | 1.5K | 65.5K | 6 |
| AS54714US | SECGLOBE - Secure Global Solutions LLC | 1.5K | — | 6 |
| AS40929US | MOEDOVE-BN - MoeDove | 1.5K | 25.7K | 78 |
| AS26159US | UMB - UMB Bank, NA | 1.5K | — | 6 |
| AS6095US | NIBR-US-DMZ - Novartis Institutes for BioMedical Research, Inc. | 1.5K | — | 5 |
| AS31911US | BSI-UBS - Vitalant | 1.5K | — | 4 |
| AS55280US | RACKBYTE - RackByte LLC | 1.5K | 3 | 9 |
| AS395378US | CASCADEDIVIDE-DC - Cascade Divide Partners, LLC | 1.5K | 131.1K | 3 |
| AS30372US | AS30372 - Crown Castle Fiber LLC | 1.5K | — | 6 |
| AS26135US | NETGAIN-TECHNOLOGY - Netgain Technology, LLC | 1.5K | — | 2 |
| AS396843US | DHP-ASN-PRI - Dean Health Plan, Inc. | 1.5K | — | 5 |
| AS36847US | DELTA-DENTAL-OF-CALIFORNIA - Delta Dental of California | 1.5K | — | 6 |
| AS397367US | CRANBROOK-01 - Cranbrook Educational Community | 1.5K | — | 2 |
| AS33614US | CITY-OF-SAN-DIEGO - City of San Diego | 1.5K | — | 6 |
| AS402732US | SMITHS - SMITH'S | 1.5K | — | 5 |
| AS19558US | KMCN-ASN - Kettering Medical Center | 1.5K | — | 6 |
| AS20088US | 2GEEKSANDAPIPE - CURRENT COMPONENTS INC | 1.5K | — | 3 |
| AS64289US | MACARNE - Macarne.com | 1.5K | 7.2K | 12 |
| AS40724US | DEKALB-COUNTY-GEORGIA-GOVERNMENT - DeKalb County, Georgia | 1.5K | — | 6 |
| AS62928US | LVMH-EQ-SECAUCUS-INET - LVMH MOET HENNESSY LOUIS VUITTON | 1.5K | — | 5 |
| AS63238US | UPTEL - Upchurch Telecom & Data, Inc. | 1.5K | — | 3 |
| AS4258US | ATG-4258 - Accretive Networks | 1.5K | 65.5K | 4 |
| AS17123US | TEAM-HEALTH - Team Health, Inc. | 1.5K | — | 6 |
| AS395506US | KN-DFW-ASN - KODIAK NETWORKS, INC. | 1.5K | 5 | 11 |
| AS397572US | DCCU - Delta Community Credit Union | 1.5K | — | 3 |
| AS400859US | EXO-BROADBAND - EXO BROADBAND | 1.5K | — | 6 |
| AS203120US | GTGL Global Telecom Group LLC | 1.5K | — | 3 |
| AS23262US | IWANINC-US - IWAN INC. | 1.5K | — | 3 |
| AS402547US | JWYNEGARJR-INC - J | 1.5K | 257 | 5 |
| AS36407US | CERT - Software Engineering Institute | 1.5K | 1 | 4 |
| AS13925US | NULLROUTE - Null Route Networks | 1.5K | 3 | 6 |
| AS27284US | FOURPLEX-ASN - Fourplex Telecom LLC | 1.5K | 19 | 8 |