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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| — |
| 1 |
| AS32658US | PINELLAS-COUNTY-SO - Pinellas County Government | 256 | — | 1 |
| AS29758US | SAMBATV-LAS - Samba TV, Inc. | 256 | 1 | 2 |
| AS393666US | COV-SML-NETWORKS - St. Mary's Health System | 256 | — | 1 |
| AS33557US | DT-ATL-QTS-ASN - Dealership Technologies, LLC | 256 | — | 1 |
| AS40646US | FRUL-1-40646 - FiberOptics R US | 256 | — | 1 |
| AS14047US | FERRIS-MFG-CORP - Ferris MFG Corp | 256 | — | 1 |
| AS62732US | BCC-BGP - Boston Coach Corp. | 256 | — | 1 |
| AS400490US | TWO-BIT-HACKS - Two Bit Hacks, LLC | 256 | 1 | 2 |
| AS26519US | ACE-002 - Ace Data Centers II, L.L.C. | 256 | — | 1 |
| AS14625US | PGA-TOUR - PGA Tour | 256 | — | 1 |
| AS46363US | HOLYFAMILY - Holy Family University | 256 | — | 1 |
| AS397736US | BEACON-FCU - Beacon Federal Credit Union | 256 | 16 | 2 |
| AS398293US | LCUB-NET-01 - LCUB | 256 | — | 1 |
| AS400502US | XTENIT - Xtenit | 256 | — | 1 |
| AS46705US | ZOOM-ONLINE - Zoom Tech Arizona Limited | 256 | 65.5K | 2 |
| AS395289US | KENTUCKY-FARM-BUREAU-MUTUAL-INSURANCE - Kentucky Farm Bureau Mutual Insurance | 256 | — | 1 |
| AS13901US | AS-AFILIAS-NRT1 - Afilias, Inc. | 256 | 1 | 2 |
| AS63461US | DFA-INTERNET - Dean Foods Company | 256 | — | 1 |
| AS5068US | STACKSINC-GLOBAL - STACKS INC | 256 | 1 | 2 |
| AS397840US | GMS-ASN-01 - GENERAL MARKETING SOLUTIONS LLC | 256 | — | 1 |
| AS40167US | SCHIFFRINBARROWAY - Schiffrin & Barroway, LLP | 256 | — | 1 |
| AS396459US | VENANGO-WAN - County of Venango | 256 | — | 1 |
| AS21800US | AIT-24PLN-ASN - Advanced Integration Technology, LP | 256 | — | 1 |
| AS40137US | AWM-INVESTMENT - AWM Investment Company, Inc. | 256 | — | 1 |
| AS398483US | SRS-PHARMACY - SRS Pharmacy Systems, Inc. | 256 | 1K | 2 |
| AS26564US | NEW-CANAAN - Town of New Canaan | 256 | — | 1 |
| AS27341US | GFNET-AS01 - Gannet Fleming, Inc. | 256 | — | 1 |
| AS396274US | SVGKC1 - Spring Venture Group LLC | 256 | — | 1 |
| AS393291US | KEMPER-DEVELOPMENT - Kemper Development Company | 256 | — | 1 |
| AS398269US | PAYERCOMPASS-01 - Voltaire Health, LLC | 256 | — | 1 |
| AS400121US | CFBTEL - CFBTEL | 256 | — | 1 |
| AS401193US | USD305REQUEST - SALINA UNIFIED SCHOOL DISTRICT | 256 | — | 1 |
| AS64241US | WOBSCALE - Wobscale Technologies, LLC | 256 | 3 | 4 |
| AS22973US | NORWEST-VENTURE - Norwest Venture Partners | 256 | — | 1 |
| AS13985US | NASCO - NASCO | 256 | — | 1 |
| AS393407US | FLORESVILLE-ISD - Floresville ISD | 256 | — | 1 |
| AS398233US | RURALREACH-01 - IVSComm, Inc | 256 | — | 1 |
| AS55196US | LTCP-AS2013 - Long Term Care Partners, LLC | 256 | — | 1 |
| AS398641US | CHCFLORG-001 - Community Health Centers, Inc. | 256 | — | 1 |
| AS397105US | UHS-AS-01 - United Health Services Hospitals, Inc. | 256 | — | 1 |
| AS18543US | ION-NEWYORKCITY-NYC - ION MEDIA NETWORKS | 256 | — | 1 |
| AS397730US | MILDPANIC2 - coresdev, LLC | 256 | 32 | 3 |
| AS11436US | BCES-BCEM-01 - Benton County Emergency Management | 256 | — | 1 |
| AS400326US | NETFIRE-NFFIBER01 - NetFire, LLC | 256 | 1 | 2 |
| AS203888US | USKVM - USKVM LLC | 256 | 16 | 2 |
| AS30169US | WLATC2160 - Western Light and Tower Company Inc | 256 | — | 1 |