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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. | 218M | 23,999 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,154 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 231 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,882 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,990 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,318 |
| 3.1K |
| — |
| 12 |
| AS398347US | ULTATEL-AS-DC03 - ULTATEL | 3.1K | — | 5 |
| AS402447US | STREAMWAYS-CORE-ASN - Streamways | 3.1K | — | 5 |
| AS54381US | SACATECH - SACA Technologies, Inc. | 3.1K | — | 12 |
| AS399776US | PBC-SEA-WA-POP - Premera Blue Cross | 3.1K | — | 4 |
| AS17168US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 3.1K | — | 12 |
| AS19836US | VERISIGNGRS - VeriSign Infrastructure & Operations | 3.1K | 15 | 27 |
| AS12190US | OOCL-LEV - OOCL (USA), Inc. | 3.1K | — | 12 |
| AS46179US | MEDIAFIRE - MediaFire, LLC | 3.1K | — | 2 |
| AS13959US | AUTOPHONE-OF-LAREDO - Autophone of Laredo | 3.1K | — | 12 |
| AS31915US | MOJOBROADBAND - Mojo Broadband | 3.1K | — | 2 |
| AS40501US | SOUNDSTACK - SoundStack Technologies, LLC | 3.1K | — | 12 |
| AS30021US | SNWL-COLO-SJL - SonicWALL, Inc. | 3.1K | 1 | 13 |
| AS26082US | POWERSHIFT-PLAINFIELD-VT - Power Shift Computer Services, Inc. | 3.1K | — | 4 |
| AS399970US | ARIN-RS-RND - ARIN Routing Security | 3.1K | 121.4K | 103 |
| AS22322US | OBERLIN-NET - CABLE CO-OP | 3.1K | — | 12 |
| AS26517US | OXY-INC - Occidental Petroleum Corporation | 3.1K | 64 | 16 |
| AS46572US | COWBOY-HOSTING - Cowboy Hosting LLC | 3.1K | 65.5K | 3 |
| AS14652US | COSTARGROUPASN - COSTAR GROUP Inc. | 3.1K | — | 10 |
| AS46203US | PNSHS - Fidelity National Information Services, Inc. | 3.1K | — | 12 |
| AS8757US | NSFOCUS NSFOCUS, Inc. | 3.1K | 5 | 17 |
| AS400988US | SLCO-ASN-01 - Salt Lake County | 3.1K | — | 9 |
| AS396317US | VITALINK-PA05 - Vitalink LLC | 3.1K | 65.5K | 6 |
| AS7194US | BWP - City of Burbank | 3.1K | 65.5K | 12 |
| AS63304US | HILLTOP-BROADBAND - HILLTOP BROADBAND | 3.1K | — | 9 |
| AS11047US | HHCC-ASN1 - Hartford Hospital | 3.1K | — | 12 |
| AS394334US | NETLINKVOICE-JAN1 - Netlink Voice | 3.1K | — | 6 |
| AS397534US | IWU-PUBLIC-01 - Indiana Wesleyan University (Marion College) | 3.1K | — | 2 |
| AS399678US | CARRIER-AMER - Carrier Corporation | 3.1K | — | 6 |
| AS62688US | ICTC - Inter-Community Telephone Co. | 3.1K | 65.5K | 6 |
| AS27398US | AITSL-27398 - Alyeska Information Technology Services LLC | 3.1K | 4 | 6 |
| AS33556US | HOME-TELEPHONE-ASN - Home Telephone Co. | 3.1K | 65.5K | 3 |
| AS31957US | AGILE - Agile Networks | 3.1K | — | 12 |
| AS395927US | MILEHIGHNETWORKS - Mile High Networks, LLC | 3.1K | — | 2 |
| AS399777US | MCCNO - NEW ORLEANS PUBLIC FACILITY MANAGEMENT, INC. | 3.1K | — | 2 |
| AS22629US | NORWORLD - NORTHWESTERN CORPORATION | 3.1K | — | 12 |
| AS393316US | CLEARPOOL - Clearpool Technologies, LLC | 3.1K | — | 9 |
| AS23484US | PACENET - Pace University | 3.1K | — | 12 |
| AS32800US | MTELCO - Moundridge Telephone Co. | 3.1K | — | 7 |
| AS33383US | HPINC - HP Inc. | 3.1K | — | 7 |
| AS397118US | GLENWOOD-BGP - Glenwood Telephone Company | 3.1K | — | 10 |
| AS22969US | AFS-ATL - Zayo Bandwidth | 3.1K | — | 2 |
| AS53903US | REBELTECAS - Rebeltec Communications, LLC | 3.1K | — | 6 |
| AS63344US | DKM2-ARIN - The Reynolds and Reynolds Company | 3.1K | — | 11 |
| AS27348US | SURFNET-1 - Surfnet Communications, Inc. | 3.1K | — | 12 |
| AS40794US | WESTCO-ASN - Westco Internet | 3.1K | — | 2 |
| AS54340US | NTS-LAKECHARLES-01 - Vexus Fiber | 3.1K | — | 4 |