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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 | 23,924 |
| 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.
32,140 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 230 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,881 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,992 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,310 |
| HM-NET - Harmony Networks, Inc. |
| 6.9K |
| — |
| 26 |
| AS33748US | DSCI - DSCI Corporation | 6.9K | — | 27 |
| AS21632US | CYBERNET1 - Cybernet1 | 6.9K | — | 12 |
| AS398493US | SYSTEMINPLACE - System In Place | 6.9K | 1K | 44 |
| AS401615US | ACCK-LTD - ACCK LLC | 6.9K | 33 | 18 |
| AS36210US | SFCF - Moscone Center Joint Ventures | 6.9K | 1 | 13 |
| AS25667US | HOME-SHOPPING-NETWORK - Home Shopping Network | 6.9K | — | 13 |
| AS33668US | CMCS - Comcast Cable Communications, LLC | 6.9K | 69 | 96 |
| AS47050US | TAMIU-ASN - Texas A&M International University | 6.9K | — | 12 |
| AS16391US | CELITO-1 - Celito Communications, LLC | 6.9K | 65.5K | 9 |
| AS13380US | ASN-CUST - Zix Corporation | 6.9K | 2 | 8 |
| AS25817US | SMARTECHCORP - SMARTECH CORPORATION | 6.9K | — | 12 |
| AS40405US | BRAZORIA-INET - Brazoria I-net | 6.9K | 65.5K | 7 |
| AS402288US | EEF - Envision EdgeFlow LLC | 6.9K | — | 27 |
| AS7138US | ENCOMPASS-ASN - Encompass Digital Media, Inc. | 6.9K | 1 | 20 |
| AS16739US | MIDCO-NET-INV - Midcontinent Communications | 6.9K | — | 7 |
| AS40837US | GLDFLDACCESS - Goldfield Telephone Company, LLC | 6.9K | — | 14 |
| AS26651US | CAREFUSION-AS - CareFusion Corporation | 6.9K | — | 27 |
| AS19949US | FNFISP - FNFISP | 6.9K | — | 27 |
| AS15989US | SFTI-EU Intercontinental Exchange Inc. | 6.9K | — | 19 |
| AS3909US | CENTURYLINK-LEGACY-QWEST-VDOC - CenturyLink Communications, LLC | 6.9K | 0 | 6 |
| AS36184US | VIRTU-FINANCIAL - Virtu Financial Operating LLC | 6.9K | — | 26 |
| AS53282US | SKYWAVE - Skywave Wireless, Inc. | 6.9K | 4.1K | 10 |
| AS25627US | BTS-USA - Business Telecommunications Services Inc | 6.9K | — | 15 |
| AS12200US | RACKSPACE - Rackspace Hosting | 6.9K | 1 | 17 |
| AS27569US | GVII - Grand Valley Internet | 6.9K | — | 9 |
| AS10461US | EZE-CASTLE-SOFTWARE-LLC - Eze Castle Software LLC | 6.9K | — | 15 |
| AS20037US | ORCL-SLDC - Oracle Corporation | 6.9K | 1 | 13 |
| AS399130US | ISPWIFI - Ispwifi | 6.9K | — | 9 |
| AS33166US | BFS-49-33166 - Broadridge Financial Solutions, Inc. | 6.9K | — | 5 |
| AS29973US | CLICKACTION - DATA AXLE, INC | 6.9K | — | 4 |
| AS22098US | CAPGROUP-NA - The Capital Group Companies, Inc. | 6.9K | 1 | 22 |
| AS63296US | AWBROADBAND - Amarillo Wireless | 6.9K | — | 13 |
| AS20464US | HP-POLY - HP Inc. | 6.9K | 1 | 26 |
| AS36131US | IMO - PageBites, Inc. | 6.9K | — | 27 |
| AS6082US | IPIFONY-AS - IPiFony Systems, Inc. | 6.9K | 16 | 16 |
| AS63039US | USMOASN - Spok Inc. | 6.9K | — | 19 |
| AS23486US | NETSPAN - Foremost Telecommunications | 6.9K | — | 6 |
| AS31747US | BLACKROCK-FINANCIAL-MANAGEMENT-2 - BlackRock Financial Management, Inc. | 6.9K | — | 26 |
| AS36436US | INFOBUNKER - Infobunker, L.L.C. | 6.9K | 65.5K | 13 |
| AS397606US | CROWSNEST-BROADBAND-LLC - Crowsnest Broadband | 6.9K | 65.5K | 21 |
| AS54624US | EL-FAIRFAX-VA - Ellucian Company LP | 6.9K | — | 9 |
| AS15211US | SQUARE - Square, Inc. | 6.9K | 65.6K | 16 |
| AS54723US | AS54723-MIDWEST-DATA-CENTER - Midwest Data Center, Inc. | 6.9K | 65.5K | 21 |
| AS203501US | EMARSYS-US-AS Emarsys North America, Inc | 6.9K | — | 23 |
| AS62713US | AS-PUBMATIC - PubMatic, Inc. | 6.9K | 1 | 26 |
| AS14713US | HBL-35-14713 - Hosted Backbone | 6.9K | 65.5K | 19 |