Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sixbynico.co.uk
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 20:20:30 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
MX Priorities
- alt3.aspmx.l.google.com: 10
- aspmx.l.google.com: 1
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- alt4.aspmx.l.google.com: 10
A / AAAA Records
- 77.72.2.44
Mail Server IPs
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 192.178.155.26 ↩ yuiadrs-in-f26.1e100.net
- 2607:f8b0:4004:c07::1b ↩ bc-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
SOA Record
Raw SOA
ns1.krystal.uk admin.k-validator-tigh-lon.krystal.uk 2026030702 3600 1800 1209600 86400
Primary NS (mname)
ns1.krystal.uk
Admin Email (rname)
admin@k-validator-tigh-lon.krystal.uk
Serial
2026030702
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.krystal.uk
ns2.krystal.uk
SPF Record
✓ Strict (-all)
v=spf1 ip4:77.72.2.44 ip4:77.72.2.130 a mx ip4:77.72.2.130 include:_spf.google.com include:relay.k.io include:spf.mailjet.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; aspf=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
google._domainkey
default._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- klaviyo-site-verification=VGgebv
- SPFv=spf1 ip4:77.72.2.44 ip4:77.72.2.130 a mx ip4:77.72.2.130 include:_spf.google.com include:relay.k.io include:spf.mailjet.com -all
- google-site-verification=wU0T2sDggjwv9UeigRpA_WQ3zxZAnYiTTn_11IxgTw0
- google-site-verification=l1QFxiKU2odXxFrJCJf2VrZ938wZPo4fO0bWrDl7lBc
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