CAIDA Topology Data Request Form

CAIDA makes topology data freely available to academic researchers and US government agencies. Corporate entities (including corporate researchers) receive access through CAIDA's membership program. Information on membership levels, services, and rates can be requested by emailing

If you have questions or problems using this form, please send email to

If your research only requires older than one year IPv4 topology data, or IPv6 data, you do not need to fill out this form. These older IPv4 topology data, and all IPv6 data are available as public datasets. You can obtain access using this form.

If you want access to the most recent one year of raw topology data, please complete and submit the following Topology Data Request Form. It usually takes about two to three business days to process your request. Upon approval, you will receive an email with instructions on how to download your requested data.

Required fields are indicated by an asterisk (*).
Contact Information
Intended Data Usage
Acceptable Use Agreement

CAIDA strongly favors wide dissemination of its datasets to legitimate researchers, and CAIDA also takes seriously its obligation to responsibly disclose datasets which may present a risk if misused.

Please read the terms of the CAIDA Master Acceptable Use Agreement below:

When referencing this dataset, the use agreement requires inclusion of the following text:

IPv4 TNT MPLS Topology Dataset - <dates used>,
The CAIDA UCSD IPv4 Routed /24 Topology Dataset - <dates used>,
The CAIDA UCSD IPv4 Routed /24 DNS Names Dataset - <dates used>,
The CAIDA UCSD Macroscopic Internet Topology Data Kit (ITDK) - <dates used>,
where <dates used> is the time span of the dataset you are using. You are required to report your publications using this dataset to CAIDA.

Related Objects

See,dataset:ark_ipv4_traceroute,dataset:ark_ipv4_dns_names,dataset:ark_itdk to explore related objects to this document in the CAIDA Resource Catalog.
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