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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,186 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| 256 |
| — |
| 1 |
| AS54273US | PADSUN - The Paducah Sun | 256 | — | 1 |
| AS11180US | AS-TIERP-11180 - TierPoint, LLC | 256 | — | 1 |
| AS393547US | AS393547 - San Diego County Credit Union | 256 | — | 1 |
| AS399561US | RTCONN-CDN - Right Connection, Inc. | 256 | 1 | 2 |
| AS62991US | CVCH-AS - Columbia Valley Community Health | 256 | — | 1 |
| AS15134US | PWCSA - Prince William County Service Authority | 256 | — | 1 |
| AS22568US | AS-SKYFI - Sky Fi | 256 | — | 1 |
| AS397516US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 256 | 1 | 2 |
| AS46884US | SERVICELINK-2 - ServiceLink Holdings, LLC | 256 | — | 1 |
| AS22437US | CORESITE-SPARE - CoreSite | 256 | 1 | 2 |
| AS19951US | MEASUREMENT-INCORPORATED-DURHAM-DATACENTER-AS - Measurement Incorporated | 256 | — | 1 |
| AS393592US | IDSD - Bonneville Joint School District no. 93 | 256 | — | 1 |
| AS19862US | BNB-22-AS - Bridgehampton National Bank | 256 | — | 1 |
| AS397959US | ADTELL-SHIP-01 - Adtell Integration | 256 | — | 1 |
| AS46214US | LEFRED - Lefleur Transportation of Tupelo, Inc. | 256 | — | 1 |
| AS393940US | ULTRADENT-PRODUCTS - Ultradent Products Inc | 256 | — | 1 |
| AS63312US | BUTTERNUT-ASN - Community Financial System, Inc. | 256 | — | 1 |
| AS16745US | ADVANCED-RADIOLOGY-CONSULTANTS-LLC - Advanced Radiology Consultants, LLC | 256 | — | 1 |
| AS53642US | CCUSD-301 - Central Community Unit School District 301 | 256 | — | 1 |
| AS205811US | sfm-pop Supply Frame, Inc. | 256 | — | 1 |
| AS399808US | LAER-AS-NYC1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS54797US | AURORA-IL - CITY OF AURORA | 256 | — | 1 |
| AS31750US | METHODIST-HEALTHCARE - Methodist Hospital of Memphis | 256 | — | 1 |
| AS36192US | AS-HOSTCIRCLE-01 - HOSTCIRCLE INC. | 256 | 1 | 2 |
| AS32923US | SILVERPNT-CT - SILVER POINT CAPITAL, LP | 256 | — | 1 |
| AS397855US | ICSCLOUD-1 - Innovative Computer Solutions, Inc | 256 | — | 1 |
| AS35990US | CSL-765-35990 - Citizen Support LLC | 256 | 4.1K | 2 |
| AS22613US | GWU-055 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS27135US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS399365US | KIRKLAND-ELLIS-DA - Kirkland & Ellis LLP | 256 | — | 1 |
| AS19302US | USCC-DC - US Chamber of Commerce | 256 | — | 1 |
| AS397870US | SFI - The Santa Fe Institute | 256 | — | 1 |
| AS51844US | HASHT-ENTERPRISE - HashTable, Inc. | 256 | 2 | 3 |
| AS30443US | GOLDEN-STATE-OVERNIGHT-DELIVERY-SERVICE-INC - Golden State Overnight Delivery Service, Inc. | 256 | — | 1 |
| AS29821US | EFCU-INET - Elevations Credit Union | 256 | — | 1 |
| AS26117US | UNION-POWER-COOPERATIVE - Union Power | 256 | — | 1 |
| AS401791US | FDR-068 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS402568US | AVERSON-IT - Averson | 256 | — | 1 |
| AS399823US | GGSL - GOIP GLOBALNET SOLUTIONS LLC | 256 | — | 1 |
| AS16390US | WIFI-BEAR-ASN - WiFi Bear LLC | 256 | — | 1 |
| AS32643US | RDI - RESOURCE DATA, INC. | 256 | — | 1 |
| AS399415US | WPS-AS-01 - Westminster Public Schools | 256 | — | 1 |
| AS19359US | 19359 - GID Investment Advisers LLC | 256 | — | 1 |
| AS40194US | MARINEBIO - MBL | 256 | — | 1 |
| AS11436US | BCES-BCEM-01 - Benton County Emergency Management | 256 | — | 1 |
| AS393279US | TECHNOMAD-LLC-AS-1 - Technomad, LLC | 256 | — | 1 |