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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 |
| AS401142US | ACERDP - AceRDP | 512 | 32 | 4 |
| AS401645US | DATAIMPULSE-AS - Softoria LLC | 512 | — | 2 |
| AS16971US | AIG-CLOUD-01 - ANSWERS IN GENESIS, INC. | 512 | — | 1 |
| AS53937US | SMH-AS-NO - Sarasota Memorial Hospital | 512 | — | 2 |
| AS17078US | ALLENCO - Allen & Company LLC | 512 | — | 2 |
| AS11737US | NMSL-6 - Nu-Age Managed Services, LLC | 512 | — | 2 |
| AS400088US | WAWA-PUBLIC-BLOCK - Wawa Inc. | 512 | — | 1 |
| AS62559US | CITYOFPEORIAAZ - CITY OF PEORIA | 512 | — | 2 |
| AS19314US | THERAWLINGSCO-LAGRANGE-KY - The Rawlings Company, LLC | 512 | — | 2 |
| AS53374US | NTIU5 - Northwest Tri-County IU 5 | 512 | — | 2 |
| AS397400US | UCCSL-01 - United Call Center Solutions LLC | 512 | — | 2 |
| AS36576US | WTAE-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS16563US | NEXUM-ASN - Nexum, Inc. | 512 | — | 1 |
| AS20276US | GDVL - Global Data Vault, L.L.C | 512 | — | 2 |
| AS400734US | LTI - Link Technologies, Inc. | 512 | 16 | 3 |
| AS12100US | LEXICON4800 - Lexicon International Inc | 512 | — | 2 |
| AS14830US | PFA-BETH-AS-1 - ProFund Advisors LLC | 512 | — | 2 |
| AS399740US | NEOGOV-DR - NEOGOV | 512 | — | 2 |
| AS400672US | AS-PHOENIXNAP-LA0 - PhoenixNAP LLC | 512 | 257 | 4 |
| AS36573US | WXII-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS394964US | MARTINMARIETTA-AS1 - Martin Marietta Inc. | 512 | — | 2 |
| AS53901US | BWS-DR-IX-AS - Board of Water Supply | 512 | — | 2 |
| AS402184US | ONE15-LLC-BND - One15 LLC | 512 | — | 1 |
| AS397331US | DRIVE - DRIVE | 512 | — | 1 |
| AS29919US | 29919 - SELECT PORTFOLIO SERVICING INC | 512 | — | 2 |
| AS196629US | DOMINION-AS Antipov Oleg | 512 | — | 2 |
| AS15280US | HOSTLEASING - Host Leasing Corporation | 512 | — | 2 |
| AS35850US | SCLS - Suffolk Cooperative Library System | 512 | — | 1 |
| AS394220US | AMWAYCENTER - Orlando Venues | 512 | — | 2 |
| AS393327US | EREFIBER - ERE FIber | 512 | 65.5K | 2 |
| AS402056US | WIDEWIRED - WideWired | 512 | 256 | 3 |
| AS402107US | BITFISSURE-01 - Bitfissure LLC | 512 | 256 | 3 |
| AS22187US | RAULAND-BORG - Rauland-Borg Corporation | 512 | — | 2 |
| AS63476US | SMS-ASSIST - SMS Assist, L.L.C. | 512 | — | 2 |
| AS27543US | ELLIOTTMGMT - Elliott Associates | 512 | — | 2 |
| AS11710US | ABBATECH - ABBA TECHNOLOGIES | 512 | — | 2 |
| AS26004US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 512 | 4.1K | 3 |
| AS13565US | ORVIS - THE ORVIS COMPANY, INC. | 512 | — | 2 |
| AS32009US | PERFECTSERVE-INC - PERFECTSERVE, INC. | 512 | — | 2 |
| AS394687US | PFSCNET - PORTFOLIO FINANCIAL SERVICING COMPANY | 512 | — | 2 |
| AS15351US | VISPERAD-NETWORKS-LLC - VISPERAD NETWORKS, LLC | 512 | — | 2 |
| AS394851US | NUSOCLOUD-CO - NUSO | 512 | 16.4K | 4 |
| AS62613US | PERELESS - Pereless Systems | 512 | — | 2 |
| AS397519US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 512 | — | 2 |
| AS35981US | ASN-GRAYBAR - GRAYBAR ELECTRIC CO. INC | 512 | — | 2 |
| AS19147US | VANCOUVER-CLINIC - The Vancouver Clinic, Inc. P.S. | 512 | — | 2 |