Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
onebox.net.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 21:34:36 UTC · ↺ Refresh
MX Hostnames
- onebox-net-br.mail.protection.outlook.com
MX Priorities
- onebox-net-br.mail.protection.outlook.com: 0
A / AAAA Records
- 186.202.157.79 (no PTR)
Mail Server IPs
- 52.101.200.0 ↩ mail-roap284cu02600.inbound.protection.outlook.com
- 52.101.198.0 ↩ mail-cp5p284cu01800.inbound.protection.outlook.com
- 52.101.198.1 ↩ mail-cp4p284cu00401.inbound.protection.outlook.com
- 52.101.198.38 ↩ mail-cp3p284cu00706.inbound.protection.outlook.com
- 2a01:111:f403:c94a:: ↩ mail-cp5p284cu01800.inbound.protection.outlook.com
- 2a01:111:f403:c94a::1 ↩ mail-cp4p284cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c94c:: ↩ mail-roap284cu02600.inbound.protection.outlook.com
- 2a01:111:f403:c94a::2 ↩ mail-cp3p284cu00702.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1309.awsdns-35.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1309.awsdns-35.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-279.awsdns-34.com
ns-646.awsdns-16.net
ns-1309.awsdns-35.org
ns-1647.awsdns-13.co.uk
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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=ms48128989
- SPFv=spf1 include:spf.protection.outlook.com -all
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