Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
ons.org.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-06 14:00:11 UTC · ↺ Refresh
MX Hostnames
- ons-org-br.mail.protection.outlook.com
MX Priorities
- ons-org-br.mail.protection.outlook.com: 0
A / AAAA Records
- 177.128.117.152 (no PTR)
Mail Server IPs
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-908.awsdns-49.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-908.awsdns-49.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-908.awsdns-49.net
ns-1220.awsdns-24.org
ns-1608.awsdns-09.co.uk
ns-35.awsdns-04.com
SPF Record
✓ Strict (-all)
v=spf1 a:smtp.ons.org.br ip4:177.128.117.0/24 ip4:200.9.186.0/24 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
8 records- anthropic-domain-verification-5gjy93=f7Bq5ikPWWYVIDS5DvHJ5iURP
- cisco-ci-domain-verification=53739f8c685ca917095c35c784bbc67e4751195a62e8a3de2d4c5adeec68d703
- google-site-verification=T3dD1ze47NEjTgtcnxNSt3WGi1I6o7c5qzgX7HDjU44
- google-site-verification=qlgWohbWQcFEInYvJuekf0oEFatFrEoiu5l8HDqKJdg
- SPFv=spf1 a:smtp.ons.org.br ip4:177.128.117.0/24 ip4:200.9.186.0/24 include:spf.protection.outlook.com -all
- MS=ms94162872
- _globalsign-domain-verification=lCkd_QqgZ2C2ltEEbC9HG8EvfsB66816KV6C2hx2EI
- _xe3l39pt354dhrj6736bift9u5rgjok
Full email verification for ons.org.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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