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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 | 23,666 |
| 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 |
| 234 |
| 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 | 4,491 |
| — |
| — |
| 0 |
| AS11761US | KKCLOUD - kkcloud | — | — | 0 |
| AS13504US | ASN-LANET-GP1 - State of Louisiana Office of Technology Services | — | — | 0 |
| AS7853US | COMCAST-TELECOMM-2 - Comcast Cable Communications, LLC | — | — | 0 |
| AS7415US | ADSAFE-1 - Integral Ad Science, Inc. | — | — | 0 |
| AS7308US | SPRINT-PCS - Sprint PCS (Personal | — | — | 0 |
| AS10449US | DISCOVER - DiscoverNet, Inc. | — | — | 0 |
| AS10621US | FIRSTNETHOU - First Internet | — | — | 0 |
| AS10377US | SOUNDCHOICE - Sound Choice Communications LLC | — | — | 0 |
| AS10317US | CUCINT - Trilegiant Corporation | — | — | 0 |
| AS16845US | KCI-ASN - Khera Communications, Inc. | — | — | 0 |
| AS5233US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS10894US | U11912 - WebGenesis, Inc | — | — | 0 |
| AS19639US | LOGICAL2 - Logical Net Corporation | — | — | 0 |
| AS6019US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5817US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5882US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5851US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |
| AS5291US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5300US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS19958US | USICA-NET - AT&T Corp. - ITS | — | — | 0 |
| AS6225US | CENTURYLINK-LEGACY-QWEST-PROJECT-LION1 - CenturyLink Communications, LLC | — | — | 0 |
| AS33242US | LIGHTYEAR-NY - LIGHTYEAR CAPITAL LLC | — | — | 0 |
| AS6094US | GRAPEVINEINC - GrapeVine Interactive, Inc. | — | — | 0 |
| AS4500US | NET-TIVOLI - Tivoli Systems, Inc | — | — | 0 |
| AS4491US | MULTIPRO - MultiNet, LLP | — | — | 0 |
| AS4169US | ECHNET - Egleston Children's Hospital | — | — | 0 |
| AS4300US | JSC-NET-ASN2 - Dod Joint Spectrum Center | — | — | 0 |
| AS4095US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS22563US | COZEN-PHL - Cozen & O'Connor | — | — | 0 |
| AS21962US | EDGEWAVE2 - Edgewave, Inc. | — | — | 0 |
| AS22161US | PROJECT-ROVER-ASN - Yahoo Holdings Inc. | — | — | 0 |
| AS21880US | ZENDESK-NETWORK-ASN - Zendesk, Inc. | — | — | 0 |
| AS21829US | AS21829 - Uvation Industries, LLC | — | — | 0 |
| AS23100US | CT-METROCAST-NET - Breezeline | — | — | 0 |
| AS20358US | GG-SUGARSHACK - SUGAR SHACK, LLC | — | — | 0 |
| AS23185US | GHXUS - GHX | — | — | 0 |
| AS23168US | MCDEAN-ASN - M.C. Dean,Inc. | — | — | 0 |
| AS54473US | TWC-54473-DUKENET - Charter Communications Inc | — | — | 0 |
| AS22650US | CITIGROUP-KNIGHT-FINANCIAL-AS22650 - Citigroup Inc. | — | — | 0 |
| AS22264US | CONTE-25-BLA - Contegix | — | — | 0 |
| AS22212US | INTERNAP-PEERING-NETWORK - Unitas Global | — | — | 0 |
| AS19274US | SYSTEM-66 - System Techniques | — | — | 0 |
| AS18771US | 3DS-BB01 - 3ds Communications LLC | — | — | 0 |
| AS17277US | CHARTER-17277-NA - Charter Communications LLC | — | — | 0 |
| AS17231US | ATT-CERFNET-BLOCK - AT&T Enterprises, LLC | — | — | 0 |
| AS19884US | DENIR-1-ASN - DENIRO MARKETING, LLC. | — | — | 0 |