Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sis.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 03:38:26 UTC · ↺ Refresh
MX Hostnames
- sis-co.mail.protection.outlook.com
MX Priorities
- sis-co.mail.protection.outlook.com: 1
A / AAAA Records
- 181.119.85.132 ↩ 132-85-119-181.ufinet.com.co
Mail Server IPs
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
nameserver01.mi.com.co hostmaster.sis.co 2026032001 10800 3600 1209600 3600
Primary NS (mname)
nameserver01.mi.com.co
Admin Email (rname)
hostmaster@sis.co
Serial
2026032001
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
nameserver04.mi.com.co
nameserver01.mi.com.co
nameserver03.mi.com.co
nameserver02.mi.com.co
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.lleida.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
10 records- MS=ms98181726
- c3ivse0nca5omiv2hu84hcrnbr
- f2k5vbcq3ggj0j330habm4c356
- 57cfjvlcde6ka6frjdptnee19a
- 43gbku04vesns30j3p5bua5p9t
- cmuscq5qihbfk7vh6ak13dq8le
- lgqton46flqhqfl5ai997vfr6u
- 9360f2ih6s25hrceivihs3n181
- 1k5rm01pal657o0g99eao9ssul
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.lleida.net -all
Full email verification for sis.co
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