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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 | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| 4.1K |
| 3 |
| AS214505US | NUCLEARFALLOUT-FRA Nuclearfallout Enterprises, Inc. | 512 | 4.1K | 3 |
| AS396846US | FL-WIFI-01 - Florida Wifi, LLC | 512 | — | 2 |
| AS29711US | CENTURA-HEALTH - Centura Health Corporation | 512 | — | 2 |
| AS32411US | ASSURERX-HEALTH-CORPORATE - AssureRx Health, Inc. | 512 | — | 2 |
| AS1010US | WHT-ASN-01 - Walnut Hill Communications | 512 | — | 2 |
| AS4898US | OPENTABLE-AS - Opentable, Inc. | 512 | — | 2 |
| AS35921US | COTTAGE-HEALTH02 - Cottage Health | 512 | — | 2 |
| AS63476US | SMS-ASSIST - SMS Assist, L.L.C. | 512 | — | 2 |
| AS394208US | BELL-PLANT-1 - Bell Textron Inc | 512 | — | 2 |
| AS46878US | DRW-HOLDINGS - DRW Holdings, LLC | 512 | — | 2 |
| AS16563US | NEXUM-ASN - Nexum, Inc. | 512 | — | 1 |
| AS54449US | GSC-GREENSBORONC - Gannett Supply Corp. - Greensboro, NC | 512 | — | 2 |
| AS40146US | RTCONN-LAS - Right Connection, Inc. | 512 | 3 | 5 |
| AS19442US | AGILENT-SCS - Agilent Technologies, Inc. | 512 | — | 2 |
| AS398001US | TGNA-WZDX - TEGNA Inc. | 512 | — | 2 |
| AS26796US | MEUS-DC1 - Mitsubishi Electric US, Inc. | 512 | — | 2 |
| AS395393US | MORLEY - Morley Companies Incorporated | 512 | — | 2 |
| AS395953US | WLN-ASID - World Line Networks | 512 | — | 2 |
| AS396063US | APJ-PUBLIC - HEWLETT PACKARD ENTERPRISE COMPANY | 512 | — | 1 |
| AS398555US | CONCOR-2-398555 - Concordia University Nebraska | 512 | — | 2 |
| AS395348US | DATASPINDLE - DataSpindle | 512 | 2K | 4 |
| AS17361US | AUTO-AS17363 - Automated Securities Clearance LLC | 512 | — | 2 |
| AS26287US | NBER-AS - National Bureau of Economic Research, Inc. | 512 | — | 1 |
| AS53937US | SMH-AS-NO - Sarasota Memorial Hospital | 512 | — | 2 |
| AS11933US | ILS-VB-ATT-AS - Supply Technologies LLC | 512 | — | 2 |
| AS46467US | DISH-NETWORK-LLC - DISH Network L.L.C. | 512 | — | 1 |
| AS27528US | EIKON-ASN-01 - Eikon Therapeutics, Inc. | 512 | — | 1 |
| AS23247US | SAMTECNA - Samtec, inc. | 512 | — | 2 |
| AS402687US | FAL - fal | 512 | — | 2 |
| AS40905US | BGP-INFOSYNC - InfoSync Services | 512 | — | 1 |
| AS20204US | NOVOLINK-HOUSTON - NovoLink Communications, Inc. - Houston | 512 | — | 2 |
| AS397605US | NISD-ASN-01 - Northwest ISD | 512 | — | 2 |
| AS32727US | SB - SB Professional Services | 512 | — | 2 |
| AS1632US | SONIC-HEALTHCARE-USA-HNY - SONIC HEALTHCARE USA, INC. | 512 | — | 2 |
| AS395292US | ACRISURE-ARENA - Acrisure Arena | 512 | — | 2 |
| AS17105US | NISA-STL - NISA Investment Advisors | 512 | — | 2 |
| AS393985US | AS-FFN - Freedom Financial Network, LLC. | 512 | — | 1 |
| AS40000US | NOBLIS-AUTONOMOUS-SYSTEM - Noblis, Inc. | 512 | — | 2 |
| AS12219US | MILLERS-SUPPLIES-AT-WORK-INC - Miller's Supplies at Work | 512 | — | 2 |
| AS17313US | THECBEGROUP - THE CBE GROUP, INC | 512 | — | 2 |
| AS397066US | NYU-HSRN-01 - New York University | 512 | — | 2 |
| AS21946US | IVSH-ATL-ASN - iVenture Solutions. LLC | 512 | — | 1 |
| AS32831US | RPCI-AS - Roswell Park Cancer Institute | 512 | — | 2 |
| AS136899US | PHOENIXNAP-AS-SG3 - PhoenixNAP | 512 | 257 | 4 |
| AS396033US | BFDX515 - BioFire Diagnostics, LLC | 512 | — | 2 |
| AS14440US | CITONCOMPUTERCORP - Citon Computer Corp | 512 | 4.1K | 10 |