Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
altenburg.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 00:23:57 UTC · ↺ Refresh
MX Hostnames
- altenburg-com-br.r-v1.mx.microsoft
MX Priorities
- altenburg-com-br.r-v1.mx.microsoft: 0
A / AAAA Records
- 104.20.41.181 (no PTR)
- 172.66.173.3 (no PTR)
- 2606:4700:10::6814:29b5
- 2606:4700:10::ac42:ad03
Mail Server IPs
- 52.101.9.17 (no PTR)
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
SOA Record
Raw SOA
james.ns.cloudflare.com dns.cloudflare.com 2400033745 10000 2400 604800 1800
Primary NS (mname)
james.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400033745
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
james.ns.cloudflare.com
meilani.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:sendgrid.net include:spf.protection.outlook.com include:amazonses.com include:_spf.rdstation.com.br -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; rf=afrf; fo=1; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
8 records- google-site-verification=fBRL4F0WrrfT11iEf9BeXfir9uhqiHhGaqm-ARErM4k
- google-site-verification=nbsnkEwm2QaBH3NwT2IxCpZAvGHVup5Xg0dAzL8r-Gk
- google-site-verification=pVG1dKA7pizJ-L1XzCi-DsCPDJHIOPaX3Bsh6RXhULM
- hibp-verify=dweb_7415eglkycidfrd2msxd5hx3
- openai-domain-verification=dv-Yr7q64SRD3lnDzr851StRyHV
- pinterest-site-verification=279ac74f6b7ac1daeabd6a094a4ee46d
- SPFv=spf1 include:sendgrid.net include:spf.protection.outlook.com include:amazonses.com include:_spf.rdstation.com.br -all
- _globalsign-domain-verification=b2P3RBNth4hZ-7Iz90NRFm9q7wxEOOpeenFifFPPLX
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