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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 23,961 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,159 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| 2K |
| — |
| 5 |
| AS23268US | NEULION - NeuLion, Inc. | 2K | — | 8 |
| AS12076US | MICROSOFT - Microsoft Corporation | 2K | 6 | 8 |
| AS26921US | CYBERSHARKS-NET - CYBERSHARKS.NET | 2K | — | 1 |
| AS16575US | HANOVER-COLLEGE - Hanover College | 2K | — | 1 |
| AS402309US | AS-AURO - AuroraNetworks LLC | 2K | — | 5 |
| AS402631US | FLIPTHEORY - FlipTheory | 2K | — | 8 |
| AS11046US | LITTLE-APPLE - Little Apple Technologies | 2K | — | 8 |
| AS6336US | TURN-US-ASN - Turn Inc. | 2K | 1 | 4 |
| AS202021US | RSOE-EU Take-Two Interactive Software, Inc. | 2K | — | 5 |
| AS21568US | NYTD - The New York Times Company | 2K | — | 1 |
| AS401964US | OUTSCALE-INC - OUTSCALE INC | 2K | — | 1 |
| AS46455US | NLI-ISP - WWLTH, Inc | 2K | 65.6K | 8 |
| AS17269US | NCFB-ASN - North Carolina Farm Bureau Mutual Insurance Company Inc | 2K | — | 3 |
| AS16432US | DFS-NAO - Discover Financial Services | 2K | — | 8 |
| AS55056US | CBC-ISPA-CUSTFACING - Central Bancompany, Inc. | 2K | — | 6 |
| AS40947US | FWOCE-AS42 - Franklin W. Olin College Of Engineering | 2K | — | 5 |
| AS18659US | MERCHANT-SOLUTIONS-18659 - Worldpay, LLC | 2K | — | 8 |
| AS54836US | TRIN-AS - Trinity Industries, Inc. | 2K | — | 5 |
| AS27621US | AMERICAN-COMPUTER-ASSOCIATES-SCHUYL-INC - AMERICAN COMPUTER ASSOCIATES | 2K | — | 8 |
| AS36481US | DIGITALEDGE-VENTURES-INC - DIGITAL EDGE VENTURES INC. | 2K | — | 5 |
| AS62622US | HOTWI-62622 - Hotwire Communications | 2K | — | 8 |
| AS55253US | CAA-55253 - Creative Artists Agency, LLC | 2K | 1 | 9 |
| AS398266US | ZIPLINK-SYSTEMS - ZipLink Systems LLC | 2K | 4.1K | 5 |
| AS33349US | THE-BANK-OF-NEW-YORK-MELLON-CORPORATION-AS33349 - The Bank of New York Mellon Corporation | 2K | — | 5 |
| AS23521US | BSERV-1-AS-23521 - Finastra Merchant Services, Inc. | 2K | — | 2 |
| AS398311US | IT-AUDITORS-PR-CORP - IT Auditors PR, Corp. | 2K | — | 5 |
| AS62488US | CCG-AS - Columbia County, Georgia | 2K | 65.5K | 2 |
| AS40667US | OIS-53-ASN - Optiquest Internet Services, Inc. | 2K | — | 1 |
| AS36252US | TNWEB-LEW-001 - TNWEB LLC | 2K | — | 1 |
| AS36797US | RURAL-BROADBAND-NETWORK-SERVICES-LLC - Rural Broadband Network Services LLC | 2K | 65.5K | 3 |
| AS40685US | ANACOMP-SD - Doculynx Operations, LLC | 2K | — | 1 |
| AS4880US | LIFELINE-ASN - Lifeline Systems, Company | 2K | — | 6 |
| AS32587US | NCH-FTWDC-01 - Frontier Communications of America, Inc. | 2K | — | 4 |
| AS32075US | FBL-AS - Iowa Farm Bureau Federation & Affiliated Cos. | 2K | — | 8 |
| AS40548US | INFINERA-US - Nokia of America Corporation | 2K | — | 5 |
| AS32021US | OSOINTERNET - Oso Internet Solutions | 2K | — | 5 |
| AS36466US | COHERE - Cohere Communications, LLC | 2K | — | 2 |
| AS396298US | ACRETO - Acreto | 2K | 38 | 12 |
| AS17093US | FAIRPOINT - Fidium | 2K | — | 5 |
| AS397340US | GLASTEL-ISP - Glasford Telephone Company | 2K | — | 4 |
| AS23509US | INVLOCSVC - Inventory Locator Service, LLC | 2K | — | 8 |
| AS30568US | VCS-AS - M3COM of Virginia, Inc | 2K | — | 5 |
| AS33444US | ASN-TAZEWELL-CO-VA-GOVT - Tazewell County | 2K | — | 1 |
| AS40298US | GPDATACENTER - General Pacific, Inc. | 2K | 65.5K | 9 |
| AS398224US | UNITEDBANK-01 - United Bankshares, Inc. | 2K | — | 4 |
| AS30038US | ANDRENA - Andrena, Inc. | 2K | — | 8 |