Domain Overview
DNS: ✓ 15d ago
Checker: ✓ 15d ago
isslab.ru
Disposable
✓ Yes
Unknown
⚠ Yes
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-25 21:18:54 UTC · ↺ Refresh
MX Hostnames
- mail.fedresurs.org
MX Priorities
- mail.fedresurs.org: 10
A / AAAA Records
- 94.250.255.136 ↩ a38.fvds.ru
Mail Server IPs
- 80.87.200.148 ↩ a39.fvds.ru
SOA Record
Raw SOA
ns1.spaceweb.ru dns1.sweb.ru 2026011734 28800 7200 1209600 600
Primary NS (mname)
ns1.spaceweb.ru
Admin Email (rname)
dns1@sweb.ru
Serial
2026011734
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
ns3.spaceweb.pro
ns4.spaceweb.pro
ns1.spaceweb.ru
ns2.spaceweb.ru
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:80.87.200.148 ~all
📊 DNS lookups: 0/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- google-site-verification=MMZdUM3qIPU6d7wqq_r490t-KEywyGF-nEtT5c6r2BU
- SPFv=spf1 ip4:80.87.200.148 ~all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for isslab.ru
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits