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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,268 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,248 |
| 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 | 413 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,721 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,955 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,300 |
| — |
| — |
| 0 |
| AS23336US | SOLIDSPACE-ASN - SolidSpace LLC | — | — | 0 |
| AS23364US | SECOTOOLS-US - Seco Tools Inc. | — | — | 0 |
| AS23499US | ACM-ASN - Aurelius Capital Management, LP | — | — | 0 |
| AS23516US | CIRRUS-SEVEN-INC - Cirrus Seven, Inc. | — | — | 0 |
| AS25723US | AOLTW-WMG-DE - Yahoo Holdings Inc. | — | — | 0 |
| AS25752US | METHEAN-AS25752 - Methean Professional, LLC | — | — | 0 |
| AS25780US | HUGESERVER-NETWORKS - HugeServer Networks, LLC | — | — | 0 |
| AS25784US | CSC-IGN-AMER-HOU-AS25784 - DXC US Latin America Corporation | — | — | 0 |
| AS25890US | AS-WAN2LAN - WAN2LAN INC. | — | — | 0 |
| AS25926US | HOSTUS-SOLUTIONS-LLC - HostUS | — | — | 0 |
| AS25945US | CBSNSOC-LR - Leidos CBSNSOC (commercial Business Services Network Security Operations Center) | — | — | 0 |
| AS25959US | TRUIST-ASN-25959 - Truist Financial Corporation | — | — | 0 |
| AS26089US | KILGORE-COLLEGE - Kilgore College | — | — | 0 |
| AS26139US | ECR - ECR Internet Services, Inc. | — | — | 0 |
| AS26163US | DATAGRAM - Internap Holding LLC | — | — | 0 |
| AS26184US | ASA-HQAS - American Society of Anesthesiologists | — | — | 0 |
| AS26248US | MESSAGELABS - Avago Technologies U.S. Inc. | — | — | 0 |
| AS26368US | CHARTER-26368-NA - Charter Communications LLC | — | — | 0 |
| AS26518US | RTINET - VARCOMM BROADBAND, INC. | — | — | 0 |
| AS26521US | WSFS-2-AS - WSFS Bank | — | — | 0 |
| AS26540US | TNA-ASIEL - Tradition North America Inc. | — | — | 0 |
| AS26563US | MASSIX-MLPE-AS - TowardEX Technologies International, Inc. | — | — | 0 |
| AS26877US | TPL-AS - Troutman Pepper Locke LLP | — | — | 0 |
| AS27036US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27051US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27054US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27071US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27072US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27109US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27133US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27145US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27159US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27204US | AMTA-2-27204 - The Albany Mutual Telephone Association | — | — | 0 |
| AS27249US | SENECA-INSURANCE-NYC - Seneca Insurance Co. Inc, | — | — | 0 |
| AS27252US | WBD-AS27252 - Warner Bros. Advanced Digital Services | — | — | 0 |
| AS27302US | APPETIZE-IO-ASN - Appetize.io LLC | — | — | 0 |
| AS27319US | ISC-F-AS - Internet Systems Consortium, Inc. | — | — | 0 |
| AS27359US | UNCOMMON-NET - Uncommon Technology Incorporated | — | — | 0 |
| AS27423US | CAITHNESS - Caithness Energy LLC. | — | — | 0 |
| AS27427US | SAMC - Trinity Health Corporation | — | — | 0 |
| AS27454US | CGCI-ASN - Cadaret Grant & Co., Inc. | — | — | 0 |
| AS27456US | AS-EY-DLFWT-DC2 - Ernst & Young LLP | — | — | 0 |
| AS27476US | TWC-27476-NA - Charter Communications Inc | — | — | 0 |
| AS27532US | MODUSLINK-RALEIGH - ModusLink Corporation | — | — | 0 |
| AS27537US | ACCAAS - Callcentric Wholesale, Inc. | — | — | 0 |
| AS27542US | KKAMERICA - K+K America Corporation | — | — | 0 |