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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) | 227.5M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,263 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 641 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,336 |
| 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.
32,247 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 | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,004 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,350 |
| — |
| — |
| 0 |
| AS19882US | AS-LL - Acuity Brands, Inc. | — | — | 0 |
| AS19954US | ATDESK - Citigroup Inc. | — | — | 0 |
| AS20064US | ASH-COLO - Resonate Networks, Inc. | — | — | 0 |
| AS20093US | ZEROLAG - Performive LLC | — | — | 0 |
| AS20114US | KEATING - KEATING MUETHING & KLEKAMP PLL | — | — | 0 |
| AS20156US | PGCPS - Board of Education of Prince George's County | — | — | 0 |
| AS20165US | EXPEDIA-PHX2 - EXPEDIA, INC | — | — | 0 |
| AS20216US | CBSITE-ASH - CareerBuilder, LLC | — | — | 0 |
| AS20219US | MTSKYWEST - Montana Sky West LLC | — | — | 0 |
| AS20309US | ASN-20309 - Nasdaq, Inc. | — | — | 0 |
| AS20431US | VGRS-AC19 - VeriSign Global Registry Services | — | — | 0 |
| AS20458US | ASN1 - CAS Severn | — | — | 0 |
| AS20471US | MICHAEL - Michael Newcomb, Sole Proprietorship | — | — | 0 |
| AS21536US | MILLENNIUM-PHARMACY-SYSTEMS - Millennium Pharmacy Systems, Inc. | — | — | 0 |
| AS21588US | SPOKEO - Spokeo, Inc | — | — | 0 |
| AS21653US | CIMCO3 - First Communications LLC | — | — | 0 |
| AS21684US | XIATIAN-LLC - XIATIAN.LLC | — | — | 0 |
| AS21815US | WEATHERFORDCOLLEGE - Weatherford College | — | — | 0 |
| AS21850US | ACI-WORLDWIDE - ACI Worldwide, Inc. | — | — | 0 |
| AS21878US | SAGE-PUBLIC-AS - Sage Publications, Inc. | — | — | 0 |
| AS21954US | TELES-27 - Telestream, Inc. | — | — | 0 |
| AS22017US | ADP-EDC - CDK Global, LLC | — | — | 0 |
| AS22036US | DT-RTS - Dealertrack, Inc. | — | — | 0 |
| AS22057US | SAP-DC-NS - SAP America Inc. | — | — | 0 |
| AS22107US | DIGITALAI - Digital.ai Software, Inc. | — | — | 0 |
| AS22117US | COMNEXIA - COMNEXIA Corporation | — | — | 0 |
| AS22120US | LIFEWAY - LifeWay Christian Resources | — | — | 0 |
| AS22153US | CCI-NET01-HAWAII - Pacxa Holding | — | — | 0 |
| AS22189US | AMRID - Amridge University | — | — | 0 |
| AS22203US | AS22203 - Navitaire LLC | — | — | 0 |
| AS22254US | ADOBE-22254 - Adobe Inc. | — | — | 0 |
| AS22267US | HSL-ASN - HighVista Strategies LLC | — | — | 0 |
| AS22290US | VENTASREIT - Ventas, Inc. | — | — | 0 |
| AS22378US | MATRIXCONSULTINGCOLA - Matrix Consulting, LLC | — | — | 0 |
| AS22540US | TUCSONVAISALA - Vaisala Inc | — | — | 0 |
| AS22558US | VPSDATACENTER - Liquid Web, L.L.C | — | — | 0 |
| AS22569US | ADS-17-22569 - CDK Global, LLC | — | — | 0 |
| AS22571US | DATABANK-MCI - DataBank Holdings, Ltd. | — | — | 0 |
| AS22587US | TSYS-NDC-EBUS - Global Payments Inc. | — | — | 0 |
| AS22651US | A44K04R32F - AKRF, Inc. | — | — | 0 |
| AS22719US | ATLANTICBB-JOHNSTOWN-2 - Breezeline | — | — | 0 |
| AS22734US | DEVRYI-4 - DeVry University | — | — | 0 |
| AS22817US | PNC - PNC Bank, National Association | — | — | 0 |
| AS22865US | PROJECT-PERFORMANCE - Project Performance Company, LLC | — | — | 0 |
| AS22905US | SOFTCOMUS - SoftCom America Inc. | — | — | 0 |
| AS22982US | RENOVODATA - RenovoData | — | — | 0 |