Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cubos.academy
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 00:12:15 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
A / AAAA Records
- 198.202.211.1
- 2620:cb:2000::1
Mail Server IPs
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.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
- 142.251.179.27 ↩ pd-in-f27.1e100.net
- 2607:f8b0:4004:c21::1b ↩ pe-in-f27.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
SOA Record
Raw SOA
grace.ns.cloudflare.com dns.cloudflare.com 2400280592 10000 2400 604800 1800
Primary NS (mname)
grace.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400280592
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
grace.ns.cloudflare.com
yahir.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:spf.mandrillapp.com include:mailgun.org include:20263481.spf05.hubspotemail.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 216 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
9 records- google-site-verification=GfeXpbG2dnEFwkhonPWuz5nd6vkmdd1bKygjyijpEOY
- google-site-verification=IA4R2MnIFd8x85oe1wvgd_PslM8Tm-FTQC4wkWWMgEE
- google-site-verification=lnB2prUwCm-b0msY68mPehO1u26gyScvZW-JXcl_dfQ
- google-site-verification=mI1AaHhFsEhXKacg7fp1OilwwdDjxeG1RIJa-7-UmIg
- sendinblue-site-verification=8473491
- SPFv=spf1 include:_spf.google.com include:spf.mandrillapp.com include:mailgun.org include:20263481.spf05.hubspotemail.net ~all
- brevo-code:4e5c08577534891e1d456de005aa6c61
- facebook-domain-verification=w5vmimne92sycvci9qq9m10328w3h7
- google-site-verification=6lgAoeRYFPwA3lm7PrlQzfmTyQI4fNMHESDuFvJv48Q
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