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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 | 21,149 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,953 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 256 |
| — |
| 1 |
| AS22028US | TEXAS-LIFE-HOME-OFFICE - Texas Life Insurance Company | 256 | — | 1 |
| AS18437US | PITT-OHIO-EXPRESS-AS - Pitt-Ohio Express, LLC. | 256 | 3 | 4 |
| AS54626US | ANALOG DEVICES - Analog Devices, Inc. | 256 | — | 1 |
| AS62992US | MBS-TEXTBOOK-EXCHANGE-INC - MBS Textbook Exchange, LLC | 256 | — | 1 |
| AS48118US | ARIES-INVESTMENTS-AS Aries Investments LLC. | 256 | — | 1 |
| AS54894US | SRA-NY-9W57 - Summit Rock Advisors, LLC | 256 | — | 1 |
| AS46087US | ASN-UDHUDOIG-01 - U.S. Department of Housing and Urban Development - Office of Inspector General | 256 | 1 | 2 |
| AS402352US | LM-ADM-001 - Admail.net | 256 | — | 1 |
| AS55210US | SAMC-HCHA - Southeast Alabama Medical Center | 256 | — | 1 |
| AS400962US | FOURTEEN-FOODS-01 - Fourteen Foods, LLC | 256 | — | 1 |
| AS22614US | IGA-ASN-01 - Legislative Services Agency | 256 | — | 1 |
| AS394254US | BLUESOFTWARE - BLUE SOFTWARE, LLC | 256 | — | 1 |
| AS33449US | ZINIO-PRD-01 - Zinio Systems, Inc | 256 | — | 1 |
| AS396103US | AGORA - WB Games Inc. | 256 | — | 1 |
| AS33032US | AMI - American Megatrends, Inc. | 256 | — | 1 |
| AS399872US | CULLMAN-REGIONAL-MEDICAL-CENTER - Cullman Regional | 256 | — | 1 |
| AS394570US | ALASU - Alabama State University | 256 | 65.5K | 2 |
| AS395844US | LUSD - LUSD | 256 | — | 1 |
| AS30659US | OCFL-COMPTROLLER - Orange County Comptroller | 256 | — | 1 |
| AS200257US | UserDepth-AS UserDepth LLC | 256 | — | 1 |
| AS395951US | ZIPDATA - ZIPDATA.NET | 256 | — | 1 |
| AS23734US | NETROUTINGINC-AS-AP - Netrouting Inc | 256 | — | 1 |
| AS46995US | JUMP-WIRELESS - Jump Wireless LLC | 256 | — | 1 |
| AS22897US | 84LUMB-CORP - 84 LUMBER COMPANY | 256 | — | 1 |
| AS395311US | MIDWAYUSA01 - MidwayUSA | 256 | — | 1 |
| AS30692US | JACKED - JackedWireless | 256 | — | 1 |
| AS399119US | TOP-TVMASTERS - TV Masters, LLC | 256 | — | 1 |
| AS210398US | Brander-Group-ASN Brander Group Inc. | 256 | — | 1 |
| AS15314US | JENZABAR-ASN1 - jenzabar inc | 256 | — | 1 |
| AS202934US | MUNTEANU-AS SINCITY HOSTING LLC | 256 | 1 | 2 |
| AS16844US | ENTRATA - Entrata | 256 | — | 1 |
| AS400661US | WIA-ORIG-01 - Western Iowa Wireless Inc | 256 | — | 1 |
| AS395835US | AJA-ASN - AJ Antunes & Co | 256 | — | 1 |
| AS916US | STALWART-ASN-01 - Stalwart Wireless | 256 | 256 | 2 |
| AS397830US | CITY-OF-GLENDALE - City of Glendale | 256 | — | 1 |
| AS19348US | CITY-OF-BRENTWOOD---TENNESSEE - City of Brentwood | 256 | — | 1 |
| AS25642US | SPIDERHOST - The Frohman Group Inc. | 256 | — | 1 |
| AS397526US | LHM-ASN-2247211 - Liberty Healthcare Management Inc. | 256 | — | 1 |
| AS47019US | EGI - Ergonomic Group Inc. | 256 | — | 1 |
| AS54168US | CHB-WAN - CORNHUSKER BANK | 256 | — | 1 |
| AS36340US | CITY-OF-TOLEDO - City of Toledo | 256 | — | 1 |
| AS11345US | AKIMA-MANAGEMENT-SERVICES - Akima Management Services, Inc. | 256 | — | 1 |
| AS62742US | BDNET-01 - Blackdragon Networks, LLC | 256 | — | 1 |
| AS53322US | AHALVORSEN-NET - Viking Global Investors LP | 256 | — | 1 |
| AS18559US | CANIK - CANIK USA, LLC | 256 | 256 | 2 |
| AS62867US | ALDINEISD-ASN01 - Aldine Independent School District | 256 | — | 1 |