Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
colombiaonline.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 01:37:05 UTC · ↺ Refresh
MX Hostnames
- aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt1.aspmx.l.google.com
MX Priorities
- aspmx.l.google.com: 1
- alt1.aspmx.l.google.com: 5
- alt3.aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 5
- alt4.aspmx.l.google.com: 10
A / AAAA Records
- 23.12.145.157
- 23.12.145.137
- 2600:1408:c400:16::17d4:f81b
- 2600:1408:c400:16::17d4:f807
Mail Server IPs
- 172.253.122.27 ↩ bh-in-f27.1e100.net
- 2607:f8b0:4004:c25::1b ↩ yuiadtq-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
SOA Record
Raw SOA
ns11.constellix.com dns.constellix.com 2015010726 43200 3600 1209600 180
Primary NS (mname)
ns11.constellix.com
Admin Email (rname)
dns@constellix.com
Serial
2015010726
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns11.constellix.com
ns21.constellix.com
ns31.constellix.com
ns41.constellix.net
ns51.constellix.net
ns61.constellix.net
SPF Record
✓ Strict (-all)
v=spf1 include:sendpal.in -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 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
5 records- google-site-verification=wMLwEjgBNk2Ye9x5OnORSAccBlJwBu9X8L_fy21aeHA
- 9j1g34hvnxrvhx3m8dc8shs5ncpl2c6l
- v=spf2.0/mfrom include:sendpal.in -all
- facebook-domain-verification=d8p4637nrzerx6em69z07r426c271z
- SPFv=spf1 include:sendpal.in -all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for colombiaonline.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits