Demon internet in the UK used to change the TTL’s of everything to 14 days otherwise their DNS servers would fall over... but that was in the late 90’s.

I would hope they no longer do that.

Cheers,

Bill

From: Stuart MacIntosh [mailto:Stuart.MacIntosh@ngaitahu.iwi.nz]
Sent: Wednesday, 12 November 2008 4:22 p.m.
To: nznog@list.waikato.ac.nz
Subject: [nznog] DNS TTL

Hello NZNOG

Quick question, hopefully. How common is it for DNS server admins to manipulate TTLs of NS records, on their recursive/customer-facing servers?

Also, when seeing a reply from a caching server (query A-type) NS is returned correctly but not the A record. Why is this (typically)?

Stuart MacIntosh

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