From time to time the DUHL will need to be modified as ISP networks
are changed. ISPs are invited to send changes to their address ranges
listed.
The general rules of de-listing are as follows:
The Regional Internet Registry (RIR) Point of Contact (PoC) can
request a listing or de-listing of any address in their space. The
only time this will be refused is when the net block information in
the RIR or in the reverse DNS naming clearly indicates the addresses
are dynamically assigned (e.g. 0.1.pool.example.com).
Anyone else may request de-listing of addresses or net blocks provided
that reverse DNS naming is set to indicate static assignment. SORBS will
consider unique names that are not part of a generic naming scheme,
or a generic naming scheme with an indication of static-ness (we prefer
the word "static" being included in the names, but will accept any
existing ISP convention if the ISP just informs us of it) as proof of
static assignment. Also, the Times to Live of the PTR records need to
be 43200 seconds or more. This is an arbitrary limit chosen by SORBS.
And of course, the reverse DNS names need to be valid; i.e. the names
given in reverse DNS need to map forward to the IP addresses for which
they were given.
End users (non ISP staff): SORBS support staff may ask you to ask your
ISP to request the change as you are not authoritative information
about the network ranges in question. The SORBS support staff may
need to request you change the rDNS naming scheme, so to save time
and trouble, ask your ISP to log a ticket and do not log a ticket
yourselves.
Please use the support form to submit
removal requests.
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