Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
4-c.com.ua
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-09-06 23:58:11 UTC · ↺ Refresh
MX Hostnames
- mx.yandex.ru
MX Priorities
- mx.yandex.ru: 10
A / AAAA Records
- 138.201.250.159 ↩ web07.vigbo.site
Mail Server IPs
- 77.88.21.249 ↩ mxfront.stable.qloud-b.yandex.net
- 2a02:6b8::311 ↩ mxfront.stable.qloud-b.yandex.net
SOA Record
Raw SOA
a.misconfigured.dns.server.invalid hostmaster.4-c.com.ua 2026090301 10800 3600 604800 3600
Primary NS (mname)
a.misconfigured.dns.server.invalid
Admin Email (rname)
hostmaster@4-c.com.ua
Serial
2026090301
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.vigbo.site
ns1.vigbo.site
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:78.46.88.140 include:_spf.yandex.net include:sendgrid.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx ip4:78.46.88.140 include:_spf.yandex.net include:sendgrid.net ~all
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