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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 |
| AS20290US | APOXY - Apoxy, Inc. | — | — | 0 |
| AS20362US | VGRS-AC18 - VeriSign Global Registry Services | — | — | 0 |
| AS21606US | SUMMER-ROAD - Summer Road, LLC | — | — | 0 |
| AS21679US | SERVERSIDE-01 - Liquid Web, L.L.C | — | — | 0 |
| AS21688US | GMP-METROCAST - Breezeline | — | — | 0 |
| AS21716US | SDL-MO - SDL Inc | — | — | 0 |
| AS21910US | DRTN-SFA - Verizon Business | — | — | 0 |
| AS22021US | ONTV-PITTSBURGH - OnTV Pittsburgh | — | — | 0 |
| AS22026US | RESERVED-IPADMIN - Level 3 Parent, LLC | — | — | 0 |
| AS22052US | WARPNETWORKS-1 - Warp Networks, Inc. | — | — | 0 |
| AS22095US | NCR-2 - NCR Voyix Corporation | — | — | 0 |
| AS22170US | NEFMLS-JAX - Northeast Florida MLS, Inc. | — | — | 0 |
| AS22190US | VIRTU-22190 - Virtu Financial Operating LLC | — | — | 0 |
| AS22207US | AKAMAI-AS - Akamai Technologies, Inc. | — | — | 0 |
| AS22459US | MCKESSON-HEALTH-SVCS - McKesson Corporation | — | — | 0 |
| AS22467US | MIRRORPLUS - Mirror Plus Technologies Inc. | — | — | 0 |
| AS22519US | HCLTMASS - HCL AMERICA INC | — | — | 0 |
| AS22605US | VIPILINK-LLC - Vipilink LLC | — | — | 0 |
| AS22635US | US-MA-DEDHAM - AliMed, Inc. | — | — | 0 |
| AS22783US | WEBPOWER - WebPower, Inc. | — | — | 0 |
| AS22823US | BDHSOLUTIONS-01 - BDH Solutions, LLC | — | — | 0 |
| AS22853US | EMULEX-1 - Avago Technologies U.S. Inc. | — | — | 0 |
| AS22922US | APPCARD - AppCard, Inc | — | — | 0 |
| AS23017US | MSI-PARTNER-ATT - Motorola Solutions, Inc. | — | — | 0 |
| AS23076US | INIT-PHX2 - Wi-Fiber, Inc. | — | — | 0 |
| AS23098US | PHOENIX-PLANO-EDS - American Airlines Inc. | — | — | 0 |
| AS23170US | US-ICAP-001 - GARBAN INTERCAPITAL | — | — | 0 |
| AS23250US | BRAINTREE-1 - PayPal, Inc. | — | — | 0 |
| AS23324US | PANSUPTLLC-0001 - Panhandle Support, LLC | — | — | 0 |
| AS23333US | ASCO - ASCO | — | — | 0 |
| AS23334US | COMM-OF-BASEBALL - Major League Baseball | — | — | 0 |
| AS23337US | ATCE-ASN - Alfa Tech Consulting Engineers, Inc | — | — | 0 |
| AS23350US | SHELL3-SER - Shell Information Technology International, Inc. | — | — | 0 |
| AS23388US | DUANE-MORRIS-CHICAGO - Duane Morris | — | — | 0 |
| AS23417US | STORESONLINE-INC-2 - StoresOnline, Inc. | — | — | 0 |
| AS23432US | WATCHCOMM-EAST-OH - Watch Communications | — | — | 0 |
| AS23461US | DCCA-PHOENIX-DATA-CENTER - NTT DATA Services, LLC | — | — | 0 |
| AS23466US | KITTYHAWK-KDC1 - Kitty Hawk Corporation | — | — | 0 |
| AS23479US | TSPEC - Technology Specialists | — | — | 0 |
| AS23517US | MERIPLEX-2-AS - Meriplex Communications, Ltd. | — | — | 0 |
| AS23518US | ICANN - ICANN | — | — | 0 |
| AS25791US | SE-NET - Stack Exchange, Inc. | — | — | 0 |
| AS25897US | SERVERBEACH - Cogeco Peer 1 (USA) Inc. | — | — | 0 |
| AS25939US | COBA-3 - Commerzbank AG New York Branch | — | — | 0 |
| AS25949US | CISCOTTGOPS - Cisco Systems Inc. | — | — | 0 |
| AS26062US | KYN-GTS - Kyndryl | — | — | 0 |