20 Jun
2015
20 Jun
'15
3:53 p.m.
Subject:
Re: [44net] portal purge
From:
Don Fanning <don(a)00100100.net>
Date:
06/20/2015 01:40 AM
To:
AMPRNet working group <44net(a)hamradio.ucsd.edu>
There is so much cruft in the DNS tables
that I imported the information into a database and ran the FCC
database against it. There were roughly 1800 entries out of 3700-ish
that matched expired/cancelled/revoked callsigns. And that's just for
the US alone - not including active licensees who just lost interest
in 44net. As BrianK would point out, there is no way that the DNS
table should be this big.
I do regular checks of the registered addresses in the 44.137.0.0/16 subnet against
the list of callsigns published by our local authority. I also delete registrations
when
"silent key" announcements appear in the club magazine.
And a few weeks ago I deleted all dangling MX and CNAME records, most of them
for US hams. (see discussion on the list)
It appears to have been standard practice to create MX records for new registered
addresses, and to not delete them when addresses are deleted.
Do you have valid "callsign change" tables in the US? A problem for me is that
there is no official information on that from our authority, apparently for privacy
reasons. So sometimes I delete an address because the callsign is no longer valid,
to find later that the operator has changed to a higher license class or vanity
callsign. And not everyone changing their callsign notifies me.
Rob