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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 | 21,173 |
| 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 | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| 8 |
| 2 |
| AS14999US | USERWORLD - Userworld, INC | 512 | — | 2 |
| AS1003US | ANDREWNET - andrewnet | 512 | 9 | 11 |
| AS19126US | KIZAWIRELESS - KIZA | 512 | — | 2 |
| AS396997US | AS-BLOCKSTREAM - Blockstream USA Corporation | 512 | 1 | 3 |
| AS26414US | AS-DNS4 - Unicycle, LLC | 512 | 4 | 4 |
| AS19364US | SEBAGO-FIBER - Sebago Fiber & Wifi, LLC | 512 | 4.1K | 3 |
| AS399090US | GINKGOBIOWORKS - Ginkgo Bioworks, Inc. | 512 | — | 2 |
| AS27560US | ULTCO - Universal Leaf Tobacco Company Inc. | 512 | — | 2 |
| AS619US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS395279US | MICLOUD-US - Mitel Networks, Inc. | 512 | — | 2 |
| AS401460US | METROPLUS-HEALTH - METROPLUS HEALTH PLAN, INC. | 512 | — | 2 |
| AS13466US | MUZAK-AS - Muzak, LLC | 512 | — | 2 |
| AS36570US | KOCO-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS36763US | WBBH - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS31788US | POPPY - Poppy Inc | 512 | 4.1K | 3 |
| AS395130US | DAY-PITNEY-LLP - Day Pitney LLP | 512 | — | 2 |
| AS14600US | SKYHIGH-SECURITY - SKYHIGH SECURITY LLC | 512 | — | 2 |
| AS33536US | KOUNT-INC - Kount, Inc. | 512 | — | 2 |
| AS26334US | BAIN-WTR - Bain & Company | 512 | — | 2 |
| AS13740US | HYPERNET-AS - 1stel, Inc. | 512 | — | 2 |
| AS32300US | FTNFI-ASN - FTN Financial | 512 | — | 2 |
| AS22234US | RELATED-COMPANIES-BGP-AS1 - The Related Companies, Inc. | 512 | — | 2 |
| AS62850US | PELSC-DC - OnTrack Systems LLC | 512 | 256 | 3 |
| AS22502US | LABCORP-HOLDINGS - Laboratory Corporation of America | 512 | — | 2 |
| AS26021US | AS-DNS3 - Unicycle, LLC | 512 | 4 | 4 |
| AS31955US | ASN-CONNEXUSENERGY - CONNEXUS ENERGY | 512 | — | 2 |
| AS63047US | KMHA - Konica Minolta Healthcare Americas, Inc. | 512 | — | 2 |
| AS19733US | DCU-LCO1 - Digital Federal Credit Union | 512 | — | 2 |
| AS393555US | MOIT - City of Baltimore, Mayor's Office of Information Technology | 512 | — | 2 |
| AS54204US | WVTM-TV - HEARST CORPORATION | 512 | — | 2 |
| AS36796US | WCNX - Waste Connections Inc. | 512 | — | 2 |
| AS398581US | CYBERMAXX-01 - CyberMaxx LLC | 512 | — | 2 |
| AS399894US | TAYLORED-FMI - Taylored Services, LLC | 512 | — | 2 |
| AS32038US | ALCORN-LOR-01 - Institutions of Higher Learning | 512 | — | 2 |
| AS32309US | 32309 - ASHS | 512 | — | 2 |
| AS20254US | TCS-ASN-216-230-22-WHTSKY - Tuscaloosa City Schools | 512 | — | 1 |
| AS40044US | BRONSON-HEALTHCARE-GROUP-INC - Bronson Healthcare Group, Inc. | 512 | — | 1 |
| AS26158US | USG-TOR-AS - ULTIMATE SOFTWARE GROUP | 512 | — | 2 |
| AS11361US | BOSCOVS - Boscov's Department Store, LLC | 512 | — | 2 |
| AS400835US | MIDD-ASN-01 - Middleby Corp | 512 | — | 2 |
| AS23434US | SURS - State Universities Retirement System | 512 | — | 2 |
| AS400894US | HUMBLEISD - Humble Independent School District | 512 | — | 2 |
| AS27507US | XTREME-INTERNET - Xtreme Internet | 512 | — | 2 |
| AS54957US | PVAL-ASN1 - Parallax Volatility Advisers LLC | 512 | — | 2 |
| AS62606US | SECTOR7LLC - Sector 7, LLC | 512 | — | 2 |
| AS11962US | EMPIRE5882300 - Empire Today LLC | 512 | — | 2 |