Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ifrs.edu.br
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 08:18:20 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- aspmx3.googlemail.com
- aspmx2.googlemail.com
- aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx5.googlemail.com
- aspmx4.googlemail.com
MX Priorities
- aspmx5.googlemail.com: 30
- aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 20
- alt2.aspmx.l.google.com: 20
- aspmx2.googlemail.com: 30
- aspmx3.googlemail.com: 30
- aspmx4.googlemail.com: 30
A / AAAA Records
- 3.170.19.29 ↩ server-3-170-19-29.iad61.r.cloudfront.net
- 3.170.19.46 ↩ server-3-170-19-46.iad61.r.cloudfront.net
- 3.170.19.43
- 3.170.19.10
- 2600:9000:2026:9600:6:de28:2680:93a1
- 2600:9000:2026:8c00:6:de28:2680:93a1
- 2600:9000:2026:aa00:6:de28:2680:93a1
- 2600:9000:2026:ae00:6:de28:2680:93a1
- 2600:9000:2026:4400:6:de28:2680:93a1
- 2600:9000:2026:e00:6:de28:2680:93a1
- 2600:9000:2026:7600:6:de28:2680:93a1
- 2600:9000:2026:cc00:6:de28:2680:93a1
Mail Server IPs
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 172.253.63.27 ↩ bi-in-f27.1e100.net
- 2607:f8b0:4004:c08::1b ↩ bi-in-f27.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
SOA Record
Raw SOA
doug.ns.cloudflare.com dns.cloudflare.com 2399450676 10000 2400 604800 1800
Primary NS (mname)
doug.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399450676
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
doug.ns.cloudflare.com
shubhi.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:200.17.92.0/24 ip4:200.17.95.0/24 ip6:2804:0:2490::0/64 include:_spf.google.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; aspf=r; pct=100; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- _github-challenge-IFRS=c93c842107
- _globalsign-domain-verification=abwGGT3x8flDwdOBNFxfQ1dJ7f6oEwyFBkzS7rD41C
- google-site-verification=fzOMilIndOQwJ-jkdjPhPDRXuQtDU5CR2A01NpPAIJ0
- SPFv=spf1 ip4:200.17.92.0/24 ip4:200.17.95.0/24 ip6:2804:0:2490::0/64 include:_spf.google.com -all
- MS=C3D437F350C127D383E4026F9018760067D4472F
- MS=DF909ACB0CBE62C2F3F6096F12D73EF0DA2E31B2
- MS=MS48625432
- _github-challenge-IFRS.ifrs.edu.br=c93c842107
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