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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 | 21,163 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,245 |
| 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 | 398 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,708 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,952 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,420 |
| — |
| — |
| 0 |
| AS21872US | WILLIS TOWERS WATSON - Willis Towers Watson | — | — | 0 |
| AS21879US | TWRS-SF - Towerstream I, Inc. | — | — | 0 |
| AS21893US | XOOM - PayPal, Inc. | — | — | 0 |
| AS21933US | 21933 - MSC.SOFTWARE CORPORATION | — | — | 0 |
| AS21999US | NETXBB - Northeast Texas Broadband, LLC | — | — | 0 |
| AS22015US | CLCH-NYC-NET - Michael Callen-Audre Lorde Community Health Center | — | — | 0 |
| AS22094US | RBI2 - Reed Business Information | — | — | 0 |
| AS22159US | SUNY-SYSTEM-ADMIN - The State University of New York | — | — | 0 |
| AS22193US | THOMSON-REUTERS - Thomson Corporation | — | — | 0 |
| AS22242US | CORVISA-MPLS - Mitel Networks, Inc. | — | — | 0 |
| AS22261US | SDCWA-ORG - San Diego County Water Authority | — | — | 0 |
| AS22291US | CHARTER-22291-DC - Charter Communications LLC | — | — | 0 |
| AS22327US | CIMATELECOM2 - Cima Telecom, Inc. | — | — | 0 |
| AS22366US | FLANDERS - Flanders | — | — | 0 |
| AS22370US | FG1 - SAP America, Inc. | — | — | 0 |
| AS22454US | DALLAS-IX-ROUTE-SERVERS - Ninja-IX Corporation | — | — | 0 |
| AS22477US | OBERM - Obermayer Rebmann Maxwell & Hippel, LLP | — | — | 0 |
| AS22658US | MASSIVE-NETWORKS-22658 - Massive Networks, Inc. | — | — | 0 |
| AS22701US | SECURITYSERVICES - Vercara, LLC | — | — | 0 |
| AS22738US | LANLOGIC - LanLogic,Inc. | — | — | 0 |
| AS22943US | INSURANCE-SERVICES-OFFICE - Insurance Services Office | — | — | 0 |
| AS23187US | ML-PROD-INTERNET-SOUTH - Merchant-Link, LLC | — | — | 0 |
| AS23259US | PLANES-INCORPORATED - Planes Incorporated | — | — | 0 |
| AS23385US | PCPL-ASN - P2 Capital Parnters LLC | — | — | 0 |
| AS23390US | BROADPATH-DC-TWO - BROADPATH, LLC | — | — | 0 |
| AS23402US | KMG125 - Katz Media Group | — | — | 0 |
| AS23480US | ZOCDOC - ZocDoc, Inc. | — | — | 0 |
| AS23485US | SEI-LLC-AS-NUM - SEI LLC | — | — | 0 |
| AS25904US | ASN-CXA-GC-25904-CBS - Cox Communications Inc. | — | — | 0 |
| AS26003US | CHARTER-26003-NA - Charter Communications LLC | — | — | 0 |
| AS26019US | JCOA-MS-AZURE - JOINT COMMISSION ON ACCREDITATION OF HEALTHCARE ORGANIZATIONS | — | — | 0 |
| AS26070US | XACCEL-DALLAS-01 - Xaccel Networks LLC | — | — | 0 |
| AS26186US | BIDMC-1 - Beth Israel Deaconess Medical Center | — | — | 0 |
| AS26486US | SWIFTWILL1 - Swiftwill, Inc. | — | — | 0 |
| AS26560US | JUNIATA - Juniata College | — | — | 0 |
| AS26678US | ASN-QMFI - QUINCY MUTUAL FIRE INSURANCE, CO. | — | — | 0 |
| AS26681US | TENMAST - Tenmast Software | — | — | 0 |
| AS26790US | SPHEREXX - Spherexx.com | — | — | 0 |
| AS26798US | SOUTH-EAST-ATLANTIC-TAP - University of Miami | — | — | 0 |
| AS26865US | FORBES-MEDIA-LLC - Forbes Media LLC. | — | — | 0 |
| AS26990US | ASN-NPG-NY-NYC - Springer Nature America, INC | — | — | 0 |
| AS26991US | PERSH - Pershing Square Capital Management, L.P. | — | — | 0 |
| AS27017US | ZIPLY-FIBER-LEGACY-ASN - Ziply Fiber | — | — | 0 |
| AS27060US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27098US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27124US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |