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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,171 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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 | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,368 |
| 512 |
| — |
| 2 |
| AS399562US | IZT-CLOUD-UNIVERSAL - IZT Cloud | 512 | — | 2 |
| AS401682US | DIALWAVE - Dialwave, Inc. | 512 | 67.6K | 11 |
| AS23525US | CNC-CNB - Canandaigua National Corporation | 512 | — | 2 |
| AS214940US | KPRONET KPROHOST LLC | 512 | 65.5K | 3 |
| AS47084US | ROAMDATA - ROAM Data Inc. | 512 | — | 2 |
| AS397990US | WILLIAMSLABS-LLC - Williamslabs LLC | 512 | 17 | 4 |
| AS394066US | CTC-AS1 - The Chugwater Telephone Company | 512 | — | 2 |
| AS22155US | MSAPP - MSA Worldwide, LLC | 512 | — | 2 |
| AS397624US | PH-LSK-001 - Parker Hannifin Corporation | 512 | — | 1 |
| AS216435US | PLIMMOBILE-AS Plim Mobile Telecom LLC | 512 | 8.2K | 38 |
| AS394932US | MOUNTAIN-INET-TFP - Mountain iNet, Inc. | 512 | — | 2 |
| AS210266US | PHOENIXNAP-PL PHOENIX NAP, LLC. | 512 | 257 | 4 |
| AS36577US | KCRA-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS14736US | CITY-AS14736 - City of Kansas City Missouri | 512 | — | 2 |
| AS13747US | DMIC-ASN1 - DONEGAL MUTUAL INSURANCE | 512 | — | 2 |
| AS46569US | WALSH-COLLEGE - Walsh College of Accountancy and Business Administration | 512 | — | 2 |
| AS399988US | ENC-HOLDING-ASN - ENC Holding Corporation | 512 | — | 2 |
| AS400232US | DAMBROUKA - Dambrouka Inc. | 512 | 3 | 4 |
| AS22676US | CITY-OF-COVINGTON-GA - City Of Covington, Georgia | 512 | — | 1 |
| AS401256US | WKKC-NETWORKEDGE-ASN - WK Kellogg Business Services LLC | 512 | — | 2 |
| AS53369US | COUNTY-OF-ALBEMARLE - County of Albemarle | 512 | — | 2 |
| AS213684US | Azalea Azalea Systems LLC | 512 | — | 2 |
| AS54247US | BATTERY-MANAGEMENT - Battery Ventures | 512 | — | 2 |
| AS17338US | UNITAS-AOS - Unitas Global | 512 | — | 2 |
| AS400958US | SYNIAC - Syniac | 512 | 257 | 4 |
| AS23513US | WHALEY - AL WHALEY/SUNNY SIDE COMPUTING | 512 | — | 2 |
| AS35901US | AVTEX-INC-ASN - Avtex, Inc. | 512 | — | 2 |
| AS23227US | NIKON - Nikon, Inc. | 512 | — | 2 |
| AS393625US | FNS-ASN - OPTIV SECURITY INC | 512 | — | 2 |
| AS401000US | BYTENAP-NETWORKS-LLC - ByteNAP Networks LLC | 512 | — | 2 |
| AS399288US | WEATHERTAP - WEATHERTAP INCORPORATED | 512 | — | 2 |
| AS396439US | HCAA-ASN01 - Hillsborough County Aviation Authority | 512 | — | 2 |
| AS10469US | RFGNET - The Ridgefield Group, Inc. | 512 | — | 1 |
| AS54286US | AS-TAIPEI-ARIN - TAIPEI101 NETWORK LLC | 512 | 20 | 7 |
| AS398722US | CENSYS-ARIN-03 - Censys, Inc. | 512 | 2 | 4 |
| AS398109US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 512 | 2 | 4 |
| AS46548US | ASN1 - New york City Housing Development Corporation | 512 | — | 2 |
| AS401518US | OAI-01 - OpenAI OpCo, LLC | 512 | — | 1 |
| AS396918US | APPLE-BANK-FOR-SAVINGS - Apple Bank for Savings | 512 | — | 2 |
| AS35907US | NANTHEALTH - NaviNet Inc. | 512 | — | 2 |
| AS36303US | VICKERY-INTERNET - Vickery Internet | 512 | 256 | 3 |
| AS17278US | IONACOLLEGE - Iona University | 512 | — | 2 |
| AS17308US | WECU-ASN - Whatcom Educational Credit Union | 512 | — | 1 |
| AS29994US | MR-MAHLE - Mark Mahle, LLC | 512 | 16 | 3 |
| AS394736US | DAYZIM - The Day & Zimmermann Group, Inc. | 512 | — | 2 |
| AS36723US | WAUKESHA-COUNTY-INTERNET - Waukesha County | 512 | — | 2 |