This topic

BT DNS not resolving certain addresses - e.g. www.aerobus.fr

durks — Wed, 13 May 2026 16:56:43 GMT

Using standard BT broadband at home, I am unable to resolve either of the domain names www.aerobus.fr or aerobus.fr - the DNS lookup just fails. But those are valid domain names and, if I try to resolve them via my mobile network provider, that works fine.

This implies a problem with BT's DNS servers.

Do other people here see the same failure?

Re: BT DNS not resolving certain addresses - e.g. www.aerobus.fr

gg30340 — Wed, 13 May 2026 17:22:53 GMT

The link work fine as does the domain name.

Re: BT DNS not resolving certain addresses - e.g. www.aerobus.fr

durks — Wed, 13 May 2026 17:29:31 GMT

Okay, thanks. I will investigate further to see if I find some local issue. It's definitely odd though - all other domain name resolution is working fine for me.

Re: BT DNS not resolving certain addresses - e.g. www.aerobus.fr

durks — Wed, 13 May 2026 23:01:49 GMT

I'm still puzzled by this - and I see the same problem on both Linux, and Windows.

Can you please tell me the IP addresses of the BT name servers you're using? Thanks.

For me, it's 81.139.56.100 (primary) and 81.139.57.100 (secondary).

Re: BT DNS not resolving certain addresses - e.g. www.aerobus.fr

gg30340 — Wed, 13 May 2026 23:08:49 GMT

They are the same as yours, 81.139.56.100 (primary) and 81.139.57.100 (secondary).