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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,186 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| 256 |
| — |
| 1 |
| AS402157US | PUPPYGIRL-LABS - Puppygirl Labs LLC | 256 | 3 | 4 |
| AS398245US | TS-AS-1011 - Trithium Solutions LLC | 256 | — | 1 |
| AS26564US | NEW-CANAAN - Town of New Canaan | 256 | — | 1 |
| AS21702US | HADDAD - The Haddad Organization Ltd. | 256 | — | 1 |
| AS11064US | TAEYANG-INNOVATIONS - Taeyang Innovations LLC | 256 | 256 | 2 |
| AS4940US | IAP-WORLDWIDE-SERVICES - IAP World Service Inc | 256 | — | 1 |
| AS394428US | CONNECTURE-156 - Connecture, Inc. | 256 | — | 1 |
| AS19692US | EMH - Ephraim McDowell Health, Inc. | 256 | 256 | 2 |
| AS400392US | EMPIRE-1 - Empire Resorts, Inc. | 256 | — | 1 |
| AS398293US | LCUB-NET-01 - LCUB | 256 | — | 1 |
| AS63193US | AHS - Atlanticare Health System Inc. | 256 | — | 1 |
| AS23926US | YAHOO-INZ - INZ Edge site | 256 | 2 | 3 |
| AS399454US | GLS-NSH1-01 - Global Linking Solutions | 256 | 1 | 2 |
| AS40408US | KOUNT-INC - Kount, Inc. | 256 | — | 1 |
| AS400386US | APOG-MHMC - Apogee Telecom Inc. | 256 | — | 1 |
| AS40530US | GREATLAND - Greatland Corporation | 256 | — | 1 |
| AS397632US | MOHAVEC-COUNTY - Mohave County AZ | 256 | — | 1 |
| AS14321US | SERVICIO-UNITELLER - Servicio Uniteller, Inc. | 256 | — | 1 |
| AS395744US | COSTCO-TRAVEL - Costco Travel | 256 | — | 1 |
| AS33191US | NOTION-WEB - Notion Labs, Inc. | 256 | 1 | 2 |
| AS13508US | BAKER-BROTHERS - Baker Bros. Advisors, LLC | 256 | — | 1 |
| AS35918US | FCE-ASN - Forest City Enterprises, Inc. | 256 | — | 1 |
| AS25760US | MLNX-US - Mellanox Technologies | 256 | — | 1 |
| AS18537US | PPD-AUSTIN - PPDI | 256 | — | 1 |
| AS401303US | NNM-004 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS55018US | PRIME - Prime Holdings Insurance Services Inc | 256 | — | 1 |
| AS53288US | STERICYCLE - STERICYCLE, INC. | 256 | — | 1 |
| AS398138US | CTG-IMDC-01 - Ciegate Technologies | 256 | — | 1 |
| AS14384US | HOSTDESIGNS - HOST DESIGNS, LLC | 256 | — | 1 |
| AS399329US | ENDRIES-ASN-01 - Endries International, Inc. | 256 | — | 1 |
| AS396953US | GRUNDY-IP-TRANSPORT - Grundy IP Transport Inc. | 256 | — | 1 |
| AS398641US | CHCFLORG-001 - Community Health Centers, Inc. | 256 | — | 1 |
| AS398948US | CCRWEST-AS - Institute for Defense Analyses | 256 | — | 1 |
| AS19594US | SALEMHOSPITALASN - Salem Hospital | 256 | — | 1 |
| AS40381US | AS-ADM-DC2 - ADM | 256 | — | 1 |
| AS397626US | CONTINENTAL-RESOURCES-INC - Continental Resources, Inc. | 256 | — | 1 |
| AS397781US | EWHEELERINC-01 - Linux Global | 256 | 1 | 2 |
| AS63336US | ADVENTIST-HEALTHCARE-MARYLAND - Adventist Healthcare | 256 | — | 1 |
| AS398150US | OSV - ONESOURCE VIRTUAL Inc. | 256 | — | 1 |
| AS40774US | BSM-9-ASN - Bay State Milling Company | 256 | — | 1 |
| AS32146US | COB-MT - City of Bozeman | 256 | — | 1 |
| AS401547US | HCDL-BUFFALO-DATA-CENTER - H5 Data Centers | 256 | 256 | 2 |
| AS19865US | ICARZ - Icarz, Inc | 256 | — | 1 |
| AS399299US | STEARNSBANK-AS-01 - Stearns Financial Services, Inc | 256 | — | 1 |
| AS21645US | ADA-CHICAGO - American Dental Association | 256 | — | 1 |
| AS32777US | SMART-CITY-IXCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 256 | — | 1 |