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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) | 227.7M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 512 |
| — |
| 2 |
| AS53796US | MCH - Miami Children's Hospital | 512 | — | 1 |
| AS6091US | INMAR-INC - Inmar, Inc. | 512 | — | 2 |
| AS40735US | HAIB - HudsonAlpha Institute for Biotechnology | 512 | — | 2 |
| AS393579US | LEE-MEMORIAL-HEALTH-SYSTEM - Lee Memorial Health System | 512 | — | 2 |
| AS397170US | COMPASS-FOUNDATION - COMPASS FOUNDATION LLC | 512 | 768 | 5 |
| AS13466US | MUZAK-AS - Muzak, LLC | 512 | — | 2 |
| AS27170US | QBE-AMERICAS-ORD - QBE Americas, Inc. | 512 | — | 2 |
| AS62517US | TAIWAN-TELECOM - Taiwan Telecom | 512 | 1 | 3 |
| AS400516US | PARTSAUTHORITY - Parts Authority, LLC | 512 | — | 2 |
| AS395928US | PROV-EQUITY - Providence Equity Partners LLC | 512 | — | 2 |
| AS32428US | BELZ-INVESTCO - BELZ ENTERPRISES | 512 | — | 2 |
| AS36153US | VGC-AMER-ASN - Vertiv | 512 | — | 2 |
| AS22588US | DOMIN-AS - DOMINION ENTERPRISES | 512 | — | 2 |
| AS398852US | NEXTOR-TELECOM - Nextor Telecom LLC | 512 | — | 2 |
| AS7133US | NYPP-AS - New York Independent System Operator, Inc. | 512 | 1 | 3 |
| AS32419US | BALDWIN-LYONS - Protective Insurance Corporation | 512 | — | 2 |
| AS36358US | CDM-AS - City of Des Moines | 512 | — | 1 |
| AS36376US | AS-CHENIERE - Cheniere Energy, Inc. | 512 | — | 2 |
| AS32306US | FALCK-MOBILE-HEALTH-CORP - Falck USA, Inc. | 512 | — | 2 |
| AS31788US | POPPY - Poppy Inc | 512 | 4.1K | 3 |
| AS399983US | APOG-MILLERSVILLE - Apogee Telecom Inc. | 512 | — | 1 |
| AS395702US | FIN-REC1 - Financial Recovery Services, Inc. | 512 | — | 2 |
| AS401859US | D3VUR - D3VUR LLC | 512 | 1 | 3 |
| AS29868US | DRW-HOLDINGS - DRW Holdings, LLC | 512 | — | 2 |
| AS393618US | VCT - Vision Concept Technology, LLC | 512 | — | 2 |
| AS400314US | GULF-WINDS-1 - Gulf Winds Credit Union | 512 | — | 2 |
| AS31922US | DATTO-ENT - Datto, LLC | 512 | — | 2 |
| AS22234US | RELATED-COMPANIES-BGP-AS1 - The Related Companies, Inc. | 512 | — | 2 |
| AS393323US | WATERFURNACE - Waterfurnace International, Inc | 512 | — | 2 |
| AS398298US | NETSTRATUM - Netstratum | 512 | — | 2 |
| AS396247US | AESHS125 - Adlai E. Stevenson High School | 512 | — | 2 |
| AS36787US | WMTW-TV-PORTLAND - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS46832US | UNIVERSITY-OF-MISSOURI-SYSTEM-INTER-CAMPUS-NETWORK - University of Missouri - dba the Missouri Research and Education Network (MOREnet) | 512 | — | 2 |
| AS397378US | PHOENIXNAP-BRA - PhoenixNAP LLC | 512 | 257 | 4 |
| AS25688US | CARTERS - The William Carter Company | 512 | — | 2 |
| AS36418US | HAP - HEALTH ALLIANCE PLAN OF MICHIGAN | 512 | — | 1 |
| AS11361US | BOSCOVS - Boscov's Department Store, LLC | 512 | — | 2 |
| AS63148US | QTI - Quick Technologies Inc. | 512 | — | 1 |
| AS62722US | CSF-ASN-01 - Central States Southeast and Southwest Areas Health and Welfare and Pension Funds | 512 | — | 2 |
| AS11760US | CHFA - Connecticut Housing Finance Authority | 512 | — | 2 |
| AS397476US | BCSUSA-LO-ASN-01 - Biotronik Corporate Services U.S., Inc. | 512 | — | 2 |
| AS33208US | EPIC-HOSTING-3 - Epic Hosting, LLC | 512 | — | 2 |
| AS397509US | FLOOR-AND-DECOR - Floor and Decor Outlets of America, Inc. | 512 | — | 2 |
| AS19102US | PCI-TW - Patterson Companies, Inc. | 512 | — | 2 |
| AS398048US | THR - THERMOS L.L.C. | 512 | — | 2 |
| AS13755US | SPJC - St. Petersburg College | 512 | — | 1 |