Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
onthinktanks.org
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 22:54:58 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- aspmx2.googlemail.com
- aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx3.googlemail.com
MX Priorities
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- aspmx2.googlemail.com: 10
- aspmx3.googlemail.com: 10
A / AAAA Records
- 104.25.130.63 (no PTR)
- 104.25.129.63 (no PTR)
- 172.67.96.58
- 2606:4700:20::6819:823f
- 2606:4700:20::6819:813f
- 2606:4700:20::ac43:603a
Mail Server IPs
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 142.250.31.26 ↩ bj-in-f26.1e100.net
- 2607:f8b0:4004:c09::1a ↩ bh-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
SOA Record
Raw SOA
charles.ns.cloudflare.com dns.cloudflare.com 2399561331 10000 2400 604800 1800
Primary NS (mname)
charles.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399561331
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
charles.ns.cloudflare.com
karina.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.createsend.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- amazonses:8HQXZwSOhP1mMxO0rpHhJFfl5SzMRQFkqJHtA2Q9KRY=
- google-site-verification=j6I7h4BPC6U8xUEg9My0dElSXOaq9P_olgZ9i_cVJT8
- google-site-verification=x28GcpjaWke6oPYThCWl92Wf3Ag72F2VDwWrvzXJ4LA
- SPFv=spf1 include:_spf.createsend.com ~all
Full email verification for onthinktanks.org
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