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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,512 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,281 |
| — |
| 0 |
| AS53379US | ACOUSTIC-ATL-CORP - Acoustic, L.P. | — | — | 0 |
| AS53391US | STARV-NET - GTT Americas, LLC | — | — | 0 |
| AS53447US | PIX-ESD1 - X2X, LLC | — | — | 0 |
| AS53470US | FAYETTECO-TX - Fayette County, Texas | — | — | 0 |
| AS53537US | ISG-AS001 - Cloudsmart | — | — | 0 |
| AS53540US | PRODEGE-LA - Prodege LLC | — | — | 0 |
| AS53545US | KENTUCKY-AOC - Administrative Office of the Courts | — | — | 0 |
| AS53576US | CALVERTHOSP - CalvertHealth Medical Center | — | — | 0 |
| AS53774US | SHOPMAS-1 - Shopmetrics, Inc | — | — | 0 |
| AS53788US | BBOX - Blue Box Systems | — | — | 0 |
| AS53815US | INTELIUS - PeopleConnect, Inc. | — | — | 0 |
| AS53853US | JAMA-ASN - Jama Software, Inc. | — | — | 0 |
| AS53967US | EAW-ASN - Education At Work | — | — | 0 |
| AS54094US | AS-RELIABLE - The Constant Company, LLC | — | — | 0 |
| AS54101US | NOBULL-ASN - Earnhardt Management Company | — | — | 0 |
| AS54136US | AS-ASN-6 - Nasdaq, Inc. | — | — | 0 |
| AS54211US | ABACUS-NY - Abacus Group LLC | — | — | 0 |
| AS54404US | EL-ORLANDO-FL - Ellucian Company LP | — | — | 0 |
| AS54416US | NOVA86-ANYCAST - Nova86 | — | — | 0 |
| AS54586US | RBSLYNK-AS5 - Fidelity National Information Services, Inc. | — | — | 0 |
| AS54627US | SWEETWATER-TV - Sweetwater Television Company | — | — | 0 |
| AS54688US | THRES - THRESHOLD COMMUNICATIONS,INC. | — | — | 0 |
| AS54694US | IPREPORT - IPREPORT | — | — | 0 |
| AS54741US | RUNBECK-CIRCUIT-1 - Runbeck Graphics , Inc. | — | — | 0 |
| AS54880US | ALTISCALE-PUBLIC - SAP America Inc. | — | — | 0 |
| AS54948US | SDSA - Samsung SDS America, Inc. | — | — | 0 |
| AS54972US | ACOMMUNCATIONS - A Communications South Mountain LLC | — | — | 0 |
| AS55070US | IMPREZZIO-KRK - Imprezzio Inc | — | — | 0 |
| AS55110US | AUCTION-PROD - Auction.com, LLC | — | — | 0 |
| AS55233US | GYRODATAINC - Gyrodata Incorporated | — | — | 0 |
| AS57974US | TERACAST-NETWORKS - Teracast Networks LLC | — | — | 0 |
| AS62539US | FORTIS - Fortis Telecom | — | — | 0 |
| AS62590US | GRIDLEY-SPRINT-CIRBN-BGP - Gridley Communications | — | — | 0 |
| AS62616US | CALHEERS-CENTURYLINK-AS - California Health Benefit Exchange | — | — | 0 |
| AS62768US | CLDY-IXP-RS - Cloudie Networks LLC | — | — | 0 |
| AS62916US | WNL - WestNet Link, Inc | — | — | 0 |
| AS63082US | RRA-SPACE - Russell Reynolds Associates, Inc. | — | — | 0 |
| AS63173US | AS-NETROUTING - Netrouting, Inc. | — | — | 0 |
| AS63192US | ATL-F-TERM-ADMIN - TBI Airport Management, Inc. | — | — | 0 |
| AS63246US | INTEGRA-3210-DATACENTER-01 - IntegraColor, Ltd. | — | — | 0 |
| AS63358US | ACS-PUBLIC - Ascensus College Savings, Inc | — | — | 0 |
| AS132574US | AI-1720-132574 - Alpha InfoLab Inc | — | — | 0 |
| AS133374US | VERSANETWORKSINC-AS-AP - Versa Networks Inc | — | — | 0 |
| AS136541US | OGILVY-AS-AP - The Ogilvy Group, LLC. | — | — | 0 |
| AS149646US | ISC-AS-AP - Internet Systems Consortium | — | — | 0 |
| AS199628US | truehostcloud Truehost Cloud LLC | — | — | 0 |