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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 512 |
| — |
| 2 |
| AS32610US | GLOBAL-AS - Global Companies LLC | 512 | — | 2 |
| AS53710US | OWENS-CORNING - Owens-Corning | 512 | 8 | 2 |
| AS32583US | LA-ENC-ASN1 - Life Alert Emergency Response, Inc. | 512 | — | 2 |
| AS393802US | CARAHSOFT - Carahsoft Technology Corp. | 512 | 1 | 3 |
| AS398298US | NETSTRATUM - Netstratum | 512 | — | 2 |
| AS23526US | HALFMOONINN-GUEST-INTERNET - Humphreys Half Moon Inn & Suites | 512 | — | 1 |
| AS54204US | WVTM-TV - HEARST CORPORATION | 512 | — | 2 |
| AS396101US | NETCLOUD-ASN - Netcloud Services | 512 | 1 | 3 |
| AS395955US | INTERLINE-BRANDS-INC - Interline Brands, Inc. | 512 | — | 2 |
| AS400159US | WAYFAIR-CAMPUS - Wayfair LLC | 512 | — | 1 |
| AS395842US | GLACIER-BROADBAND-MT - Glacier Broadband | 512 | — | 2 |
| AS26304US | COBORNS-PUB - Coborn's Inc | 512 | — | 2 |
| AS29746US | S3PL-ASN - S3 Partners LLC | 512 | — | 2 |
| AS54957US | PVAL-ASN1 - Parallax Volatility Advisers LLC | 512 | — | 2 |
| AS401138US | MORSECOMMUNICATIONS - Morse Communications, Inc. | 512 | 1 | 3 |
| AS31803US | MMPLP - Magellan Midstream Partners, L.P. | 512 | — | 2 |
| AS13755US | SPJC - St. Petersburg College | 512 | — | 1 |
| AS19599US | COPYRIGHT - COPYRIGHT CLEARANCE CENTER | 512 | — | 2 |
| AS62966US | AS-BRIGHTEDGE-COM - BrightEdge Technologies | 512 | — | 1 |
| AS397277US | NAUAS - NAU Country Insurance Company | 512 | 2 | 4 |
| AS22502US | LABCORP-HOLDINGS - Laboratory Corporation of America | 512 | — | 2 |
| AS399206US | ASSOCIATED-COMPUTER-SYSTEMS - Associated Computer Systems, Ltd | 512 | — | 2 |
| AS395252US | STAMFORD-HEALTH - Stamford Hospital | 512 | — | 2 |
| AS33685US | LOAFHOSTS - Loafhosts | 512 | — | 2 |
| AS402487US | HOSTCRAM - HostCram | 512 | — | 2 |
| AS15020US | AS-BANDITO - Bandito Networks, Inc | 512 | 3 | 5 |
| AS30508US | TXDPS - Texas Department of Public Safety | 512 | — | 2 |
| AS53793US | ACLI - ACLI | 512 | — | 2 |
| AS40205US | PRISMA-ASN-1 - PRISMA HOLDINGS, LLC | 512 | 3 | 5 |
| AS13671US | VRIS-AS-BLOCK - Verizon Business | 512 | — | 2 |
| AS4361US | VERSATURE-NET2PHONE - IDT Corporation | 512 | — | 2 |
| AS33208US | EPIC-HOSTING-3 - Epic Hosting, LLC | 512 | — | 2 |
| AS399480US | TI-GARLAND-QX-HUB - Texas Instruments Incorporated | 512 | — | 2 |
| AS397170US | COMPASS-FOUNDATION - COMPASS FOUNDATION LLC | 512 | 768 | 5 |
| AS396071US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 512 | 4.1K | 2 |
| AS399983US | APOG-MILLERSVILLE - Apogee Telecom Inc. | 512 | — | 1 |
| AS33536US | KOUNT-INC - Kount, Inc. | 512 | — | 2 |
| AS400835US | MIDD-ASN-01 - Middleby Corp | 512 | — | 2 |
| AS46773US | AS46773 - INTEGRATED DATA PROCESSING, INC. | 512 | — | 2 |
| AS11894US | SERVICE-CREDIT-UNION-11894 - Service Credit Union | 512 | — | 1 |
| AS22538US | IBM-CIOUS - IBM | 512 | — | 2 |
| AS36570US | KOCO-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS25688US | CARTERS - The William Carter Company | 512 | — | 2 |
| AS31955US | ASN-CONNEXUSENERGY - CONNEXUS ENERGY | 512 | — | 2 |
| AS398188US | COUNTY-OF-PASSAIC - County of Passaic | 512 | — | 1 |
| AS32041US | UL - Underwriters Laboratories | 512 | — | 2 |