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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 | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS26981US | GLM-MEDIA - Glm Media | 256 | — | 1 |
| AS62905US | DART-CONTAINER-CORPORATION-ASN - Dart Container Corporation | 256 | — | 1 |
| AS54920US | PHAEDON - Phaedon Acquisition, Inc. | 256 | — | 1 |
| AS26487US | NEWPIRVINE - Newport Corporation | 256 | — | 1 |
| AS395635US | GAS-SBC - Guardian Alarm Systems, Inc. | 256 | — | 1 |
| AS13869US | TEAM-AIR-EXPRESS - Team Worldwide | 256 | 1 | 2 |
| AS26526US | ENVESTNETPMC - ENV | 256 | — | 1 |
| AS30563US | STRATACOM-GA-1 - Stratacom Communications, Inc. | 256 | — | 1 |
| AS17010US | HOOSIER-ENERGY - Hoosier Energy Rural Electric Cooperative, Inc. | 256 | — | 1 |
| AS63307US | EARTHLINK-LIGHTOWER - Cooley Dickinson Hospital | 256 | — | 1 |
| AS395480US | ALKEON-CAPITAL-MANAGEMENT-LLC - Alkeon Capital Management, LLC | 256 | — | 1 |
| AS20247US | IC531954 - Mercy College | 256 | — | 1 |
| AS26868US | NCTA-WASHINGTONDC - NCTA - The Internet & Television Association | 256 | 1 | 2 |
| AS27592US | RPI-BGP - Reliable Parts Inc. | 256 | — | 1 |
| AS401527US | APPALYTICS-MAIN - Appalytics LLC | 256 | — | 1 |
| AS64230US | MBX-LIB - Motherboard Express Company | 256 | 1 | 2 |
| AS11029US | NETVATA - NetVata, LLC | 256 | 65.5K | 2 |
| AS399118US | OPB-MACADAM-01 - Oregon Public Broadcasting | 256 | — | 1 |
| AS40930US | MERIDIANKNOWLEDGESOLUTIONS - Meridian Knowledge Solutions | 256 | — | 1 |
| AS22917US | OFWL-AS - Olshan | 256 | — | 1 |
| AS402795US | SHARETEC-64-95-156 - Sharetec, | 256 | — | 1 |
| AS398937US | FIBERCREEK - Fibercreek Networks, LLC | 256 | — | 1 |
| AS31971US | UHC-SV - UMPQUA BANK | 256 | — | 1 |
| AS401950US | BUNDLE-BONE - IPNSIG INC. | 256 | 256 | 2 |
| AS394602US | ILLINOISCOLLEGE - Illinois College | 256 | — | 1 |
| AS394518US | CHSD230 - Consolidated High School District 230 | 256 | — | 1 |
| AS62923US | LWP-ASN - Lakeway Publishers, Inc. | 256 | — | 1 |
| AS17219US | WINGS-NET-2025 - Wings Financial Credit Union | 256 | — | 1 |
| AS7060US | EA - Electronic Arts, Inc. | 256 | — | 1 |
| AS399398US | FITNESS-INTERNATIONAL - FITNESS INTERNATIONAL | 256 | — | 1 |
| AS395528US | IRI-IAD - International Registries | 256 | — | 1 |
| AS400044US | AS-CEIWC - Chesapeake Employers Insurance Company | 256 | — | 1 |
| AS13619US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS396409US | TKG-AS01 - KRAFT GROUP LLC | 256 | — | 1 |
| AS62950US | STOF-ASN - Seminole Tribe of Florida | 256 | — | 1 |
| AS399803US | HOMETOWNWIRELESS-LLC - Hometown Tech, LLC | 256 | — | 1 |
| AS399029US | IXD-MEMBER-SERVICES - IX-Denver | 256 | 65.5K | 2 |
| AS398407US | INTELIUM-1 - Intelium Corp. | 256 | — | 1 |
| AS398931US | LS-ENTERPRISES - LS Enterprises | 256 | 1 | 2 |
| AS30262US | PTT-AS - High 5 Games, LLC | 256 | — | 1 |
| AS13515US | PBA - Palm Beach Atlantic University | 256 | — | 1 |
| AS53476US | NDBH - New Directions Behavioral Health, LLC | 256 | — | 1 |
| AS393563US | ACTIFIO-AS - Actifio, Inc. | 256 | — | 1 |
| AS19857US | BEFCORP - Bob Evans Farms, Inc. | 256 | — | 1 |
| AS394185US | BOU-BANCORP - Bank of Utah | 256 | — | 1 |
| AS396114US | GENERAL-ASN - SEARHC | 256 | — | 1 |