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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 | 24,372 |
| 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. | 44.9M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,275 |
| 0 |
| AS3475US | DNIC-AS-03475 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS3521US | DSI-WR - RTX BBN Technologies, Inc. | — | — | 0 |
| AS3533US | DNIC-AS-03533 - United States Department of Defense (DoD) | — | — | 0 |
| AS3543US | DNIC-AS-03543 - United States Department of Defense (DoD) | — | — | 0 |
| AS3581US | OBS-NET - Open Business Systems Inc. | — | — | 0 |
| AS3600US | SUNNET-AS - Sun Networks, Inc. | — | — | 0 |
| AS3642US | GSA-PAN-DDN - GSA Data Communications and Networking Branch | — | — | 0 |
| AS3648US | COGENT-3648 - Cogent Communications, LLC | — | — | 0 |
| AS3652US | COGENT-3652 - Cogent Communications, LLC | — | — | 0 |
| AS3673US | SYNERGYNET - Synergy Commincations, Inc. | — | — | 0 |
| AS3687US | GLOBALCOM-1 - Globalcom | — | — | 0 |
| AS3750US | NETPOINT1-NET - Net Point LLC | — | — | 0 |
| AS3878US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3894US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3904US | ASTHOUGHTPRT - ThoughtPort inc. | — | — | 0 |
| AS3922US | OPENTEXT-EMEA-NL-AMSTELVEEN - GXS | — | — | 0 |
| AS3953US | PROFILE - Profile International | — | — | 0 |
| AS3957US | AIP - American Institute of Physics Incorporated | — | — | 0 |
| AS3965US | INTERLINK-3 - Verizon Business | — | — | 0 |
| AS4017US | BELLST - Verizon Business | — | — | 0 |
| AS4026US | ASN-4020-1 - Air Force Systems Networking | — | — | 0 |
| AS4038US | ASN-4020-1 - Air Force Systems Networking | — | — | 0 |
| AS4124US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4163US | TIN-1 - Air Force Systems Networking | — | — | 0 |
| AS4222US | LEN-NET - University of Oregon | — | — | 0 |
| AS4259US | IOCOM - IOCOM, LTD | — | — | 0 |
| AS4262US | CERNET-ASN-BLOCK - California Education and Research Federation Network | — | — | 0 |
| AS4269US | CERNET-ASN-BLOCK - California Education and Research Federation Network | — | — | 0 |
| AS4281US | CENTURYLINK-TSDS-FLWNPK - CenturyLink Communications, LLC | — | — | 0 |
| AS4336US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4351US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4355US | ERMS-EARTHLNK - Windstream Communications LLC | — | — | 0 |
| AS4377US | SSSI-NETS - System Software Support, Inc. | — | — | 0 |
| AS4378US | HOSTINGCOM - Ntirety, Inc. | — | — | 0 |
| AS4404US | DSI-CUST-BLK2 - Houston Associates, Inc. | — | — | 0 |
| AS4432US | CSTONE-NET - Cornerstone Communications, Inc. | — | — | 0 |
| AS4441US | MARFORPACDJOSS - Marine Forces Pacific | — | — | 0 |
| AS4448US | OPEN-ACCESS-AS - Open Access Inc. | — | — | 0 |
| AS4512US | PCWNET - PCW Microsystem, Inc. | — | — | 0 |
| AS4518US | TELECOM - Comptrodex, Inc. | — | — | 0 |
| AS4530US | RCN-AS5 - RCN | — | — | 0 |
| AS4586US | TX-TNRIS - Texas Natural Resources Information System | — | — | 0 |
| AS4606US | HCI - Harbour Communications | — | — | 0 |
| AS4903US | ANYPRESENTATIONS - ANY PRESENTATIONS LLC | — | — | 0 |
| AS4921US | EX-SV-GW5 - Exodus Communiations, Inc. | — | — | 0 |
| AS4982US | JAZZIE - Jazzie Systems | — | — | 0 |