---
name: "rbldns-data"
section: "8"
platform: "linux"
package: "rbldns"
version: "1:1.05-22"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/rbldns-data"
---

# rbldns-data(8)

data tool for rbldns

## NAME

rbldns-data - data tool for rbldns

## DESCRIPTION

**rbldns-data** reads an IP address list from a file named  *data* in the current directory. It creates  *data.cdb* in a binary format designed for fast access by  [**rbldns**(8)](/rbldns/8.md). It may also create some other files with names beginning with  *data*.

**rbldns-data** updates  *data.cdb* atomically, so you can use it safely while  [**rbldns**(8)](/rbldns/8.md) is running. If anything goes wrong with the creation of  *data.cdb*, **rbldns-data** stops and leaves the old  *data.cdb* in place.

## Data format

*ip*

The IP address  *ip* is on the list.

*ip/n*

All IP addresses that share the first  *n* bits of the IP address  *ip* are on the list. For example,  *1.2.3.0/24* means all  *1.2.3.\** addresses. *n* must be at least 8, and all bits past the  *n*th in  *ip* must be 0.

:*a:txt*

DNS queries for addresses on the list will receive an A record of  *a* and a TXT record of  *txt*. Typically  *a* is  *127.0.0.2* and  *txt* is a pointer to a web page about the list.

If  *txt* ends with  *$*, [**rbldns**(8)](/rbldns/8.md) replaces the  *$* with the IP address.

\#*comment*

Comment line. The line is ignored.

## SEE ALSO

[rbldns(8)](/rbldns/8.md)

http://cr.yp.to/djbdns.html