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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,512 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,281 |
| — |
| 0 |
| AS402470US | AUGUSTA - Technical | — | — | 0 |
| AS402512US | ONE-CLICK-TELECOM - 1 | — | — | 0 |
| AS402527US | ASTRALMYST-AS-1 - Astralmyst | — | — | 0 |
| AS402560US | NIKO-ANDREO - NicktronicIT | — | — | 0 |
| AS402635US | SINES - Sines | — | — | 0 |
| AS402643US | CBL-177 - CloudNest | — | — | 0 |
| AS402698US | MINUTE - Minute | — | — | 0 |
| AS402721US | GW-NETWORKS - Gigawest | — | — | 0 |
| AS402728US | AS-TPE - TAIPEI101 | — | — | 0 |
| AS402731US | AS-QIAN - ZephyrNodes | — | — | 0 |
| AS402780US | KYFIX - KYFIX | — | — | 0 |
| AS402819US | SMAA-INTERNET-01 - Sarasota | — | — | 0 |
| AS402842US | SIMPLAY3-SB-01 - THE | — | — | 0 |
| AS402848US | PHOSPHOR-01 - Phosphor | — | — | 0 |
| AS402886US | GENESYS-CLOUD-00 - Genesys | — | — | 0 |
| AS402905US | TDDT-EDGE - TDDT, | — | — | 0 |
| AS402943US | SWFIBER - Spicewood | — | — | 0 |
| AS402947US | SPUZE - SPUZE | — | — | 0 |
| AS402973US | CLINTISD-ASN - Clint | — | — | 0 |
| AS402995US | RNR - Regional | — | — | 0 |
| AS403036US | GOODKIND-NET - Alexander | — | — | 0 |
| AS403041US | SCHDY-1BWAY - Schenectady | — | — | 0 |
| AS403042US | COOLHOSTINGS - CoolHostings | — | — | 0 |
| AS403061US | GROT - Ramaswamy | — | — | 0 |
| AS403068US | CLOUDEVELOP-01 - Cloudevelop | — | — | 0 |
| AS36US | EGP-TESTOR - SRI International | — | — | 0 |
| AS142US | DNIC-AS-00142 - Headquarters, USAISC | — | — | 0 |
| AS146US | HQEIS-AS - Air Force Systems Networking | — | — | 0 |
| AS215US | DNIC-AS-00215 - Headquarters, USAISC | — | — | 0 |
| AS274US | AINET-AS274 - American Information Network | — | — | 0 |
| AS402US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS415US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS416US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS433US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS460US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS484US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS541US | IGAUTON - Intelligenetics Inc. | — | — | 0 |
| AS570US | SSD-NET-AS - Air Force Systems Networking | — | — | 0 |
| AS622US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS629US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS648US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS658US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | — | — | 0 |
| AS671US | DNIC-AS-00671 - Headquarters, USAISC | — | — | 0 |
| AS685US | NTTA-685 - NTT America, Inc. | — | — | 0 |
| AS708US | SB-COMM-AS - Sentinel Byte Community | — | — | 0 |
| AS737US | AFCONC-BLOCK2-AS - Air Force Systems Networking | — | — | 0 |