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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS62736US | LANDMARK-COLLEGE - Landmark College, Inc | 256 | — | 1 |
| AS25678US | SCHIFFHARDIN - Schiff, Hardin & Waite | 256 | — | 1 |
| AS219106US | EU-VOXIMPLANTINC Voximplant, Inc. | 256 | — | 1 |
| AS401718US | HAULERS-INSURANCE - Haulers Insurance Company Inc. | 256 | — | 1 |
| AS219118US | MIA-AI MIA AI Holdings Inc | 256 | — | 1 |
| AS399530US | CIR-DC-02 - Cambridge Investment Research, Inc. | 256 | — | 1 |
| AS1053US | BEARCOM-ALWAYS-ON - BearCom Operating, LLC | 256 | — | 1 |
| AS53614US | 53614 - Bob's Discount Furniture, LLC | 256 | — | 1 |
| AS394165US | COGNC - City of Greenville, NC | 256 | — | 1 |
| AS53465US | ANSYS - ANSYS, INC | 256 | — | 1 |
| AS399223US | TRUNET-INTERNET-SERVICES-LLC - TruNet Internet Services, LLC | 256 | — | 1 |
| AS26765US | REDUNDANT-INTERNET - Bountiful City | 256 | — | 1 |
| AS393522US | AS-METROLIST-SAC - MetroList Services, Inc. | 256 | — | 1 |
| AS401492US | WINDING-RIVERS-LIBRARY-SYSTEM - Winding Rivers Library System | 256 | — | 1 |
| AS400989US | YDIO - Ydio LLC | 256 | 1.7K | 28 |
| AS396136US | ECHO-ATL1 - Echo Technologies, LLC | 256 | — | 1 |
| AS53816US | BRENTWOODACADEMY-TN - Brentwood Academy | 256 | — | 1 |
| AS18503US | CTRL-IT-ASN - Concept Imagineering LLC | 256 | — | 1 |
| AS62629US | RESULTS - Results Physiotherapy | 256 | — | 1 |
| AS397949US | REG-US-ASN-01 - Chevron Corporation | 256 | — | 1 |
| AS393751US | COUNTY-OF-BERKS - County of Berks | 256 | — | 1 |
| AS11622US | OFPD - Orland Fire Protection District | 256 | — | 1 |
| AS395573US | IBTCONNECT - IBT Connect LLC | 256 | 4.1K | 2 |
| AS395615US | COF-EQX-SEA-PP - Capital One Financial Corporation | 256 | — | 1 |
| AS30019US | PSBC - BLOODWORKS NORTHWEST | 256 | — | 1 |
| AS394629US | MWIECOM - MWI Veterinary Supply Co. | 256 | — | 1 |
| AS53819US | PICTOMETRY-1 - PICTOMETRY INTERNATIONAL CORP. | 256 | — | 1 |
| AS29745US | WILSON-AS - Wilson Tool Enterprises, Inc. | 256 | — | 1 |
| AS398178US | TELCION-NETOPS-01 - Telcion Communications Group | 256 | — | 1 |
| AS401069US | GLOVISAL-01 - Glovis Alabama | 256 | — | 1 |
| AS395484US | PETCO-NSC - Petco | 256 | — | 1 |
| AS29971US | ICUC001 - iControl Systems USA LLC | 256 | — | 1 |
| AS397252US | STL-ASN-01 - Summitt Trucking, LLC | 256 | — | 1 |
| AS402421US | FUTONET - FUTO | 256 | — | 1 |
| AS22293US | INSP-AS1 - InfoSpace Holdings, LLC | 256 | — | 1 |
| AS401236US | SBI - South Bay Internet | 256 | — | 1 |
| AS38439US | ZFSRENT-38439 - ZFS.RENT LLC | 256 | 7 | 8 |
| AS46921US | SMITHGROUP-ASN - SMITHGROUP Companies, Inc. | 256 | — | 1 |
| AS401787US | OMNITEC - Omnitec Corporation | 256 | — | 1 |
| AS54808US | SUN-COAST-RESOURCES - SUN COAST RESOURCES, INC | 256 | — | 1 |
| AS393766US | PDSDNET - Penn Delco School District | 256 | — | 1 |
| AS401873US | STM-014 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS396404US | ANDERSON - Anderson Hospital | 256 | — | 1 |
| AS40368US | NIXCON-GROUP-LLC - Nixcon | 256 | — | 1 |
| AS934US | BSTI - Big Sky Tech & Internet, Inc. | 256 | 256 | 2 |
| AS36780US | SECURE-GATEWAY-ALSCO - ALSCO | 256 | — | 1 |