Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cklass.com.mx
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 16:21:04 UTC · ↺ Refresh
MX Hostnames
- cklass-com-mx.mail.protection.outlook.com
MX Priorities
- cklass-com-mx.mail.protection.outlook.com: 0
A / AAAA Records
- 100.24.208.97 ↩ staticip2.multiscreensite.com
- 35.172.94.1 ↩ staticip.multiscreensite.com
Mail Server IPs
- 52.101.232.3 ↩ mail-qr2p297cu00303.inbound.protection.outlook.com
- 52.101.232.1 ↩ mail-qr0p297cu00401.inbound.protection.outlook.com
- 52.101.232.2 ↩ mail-qr1p297cu00202.inbound.protection.outlook.com
- 52.101.232.0 ↩ mail-qr0p297cu00300.inbound.protection.outlook.com
- 2a01:111:f403:cc3a::3 ↩ mail-qr2p297cu00303.inbound.protection.outlook.com
- 2a01:111:f403:cc3a:: ↩ mail-qr0p297cu00300.inbound.protection.outlook.com
- 2a01:111:f403:cc3a::1 ↩ mail-qr0p297cu00401.inbound.protection.outlook.com
- 2a01:111:f403:cc3a::2 ↩ mail-qr1p297cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.byethost1.org response.ifastnet.com 2026021001 3660 951 604810 952
Primary NS (mname)
ns1.byethost1.org
Admin Email (rname)
response@ifastnet.com
Serial
2026021001
Refresh
3660s
Retry
951s
Expire
604810s
Minimum TTL
952s
Nameservers (NS)
ns1.byethost1.org
ns2.byethost1.org
SPF Record
✓ Strict (-all)
v=spf1 include:relay.mailchannels.net include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;sp=none;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- MS=ms65317641
- SPFv=spf1 include:relay.mailchannels.net include:spf.protection.outlook.com -all
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