Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
institutolumen.edu.mx
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 03:54:01 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- aspmx.l.google.com: 1
- alt4.aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 5
- alt3.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
A / AAAA Records
- 67.217.36.134
Mail Server IPs
- 172.253.62.27 ↩ bc-in-f27.1e100.net
- 2607:f8b0:4004:c21::1a ↩ pe-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
SOA Record
Raw SOA
ns1-montu.hosting-mexico.net notifications.hosting-mexico.com 2023070103 3600 1800 1209600 86400
Primary NS (mname)
ns1-montu.hosting-mexico.net
Admin Email (rname)
notifications@hosting-mexico.com
Serial
2023070103
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1-montu.hosting-mexico.net
ns2-montu.hosting-mexico.net
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:67.217.36.134 ip4:68.70.164.28 +a +mx +ip4:74.63.209.138 +ip4:216.245.208.162 +ip4:216.245.199.114 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms16620920
- SPFv=spf1 ip4:67.217.36.134 ip4:68.70.164.28 +a +mx +ip4:74.63.209.138 +ip4:216.245.208.162 +ip4:216.245.199.114 ~all
- google-site-verification=r1ZZKwXf4B8BiJxPWswV6oocJMAFsRM8CBB-M-Bm82U
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