rs21.org.uk

Registration

Registrar

Krystal Hosting Ltd

Created

2013-12-30

Expires

2027-12-30 589 days left

Updated

2025-12-30

Name servers

• ns1.krystal.co.uk.
• ns2.krystal.co.uk.

DNS records live

NS

• ns1.krystal.uk
• ns2.krystal.uk

MX

• 10 mx1.krystal.uk
• 20 mx2.krystal.uk

Email authentication weak

SPF

v=spf1 include:relay.k.io ip4:77.72.2.87 include:sendgrid.net ~all

softfail (~all)

DMARC

not published

DKIM

• default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApL7u1DNlJdUCgZo2kYh7gejwyAxrmw4Fw3GBMur21X/k3LYMyzXjdhZLgQgnIMaxDuRDV54bMS2P6T…

selectors probed

Certificate (current)

Full certificate history on crt.sh ↗

Linked from (1)

• mkaradjis.com×2