Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
studysmarter.de
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 12:21:31 UTC · ↺ Refresh
MX Hostnames
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
A / AAAA Records
- 3.73.92.191
- 18.198.34.103
- 63.183.49.23
Mail Server IPs
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 172.253.115.27 ↩ bg-in-f27.1e100.net
- 2607:f8b0:4004:c27::1a ↩ yuiadsk-in-f26.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
SOA Record
Raw SOA
ns-1220.awsdns-24.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1220.awsdns-24.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-398.awsdns-49.com
ns-564.awsdns-06.net
ns-1220.awsdns-24.org
ns-1595.awsdns-07.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 a include:_spf.google.com include:sendgrid.net include:mail.zendesk.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=r;adkim=r;fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._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
7 records- google-site-verification=khRwzQcgj3HuXJZUh9XvHXq_d8rA9wbHStL2MmQzX8Q
- google-site-verification=mpMjtFqol1zTgIa8y8JR63xfihJId28TI3GnsBIq9Ek
- google-site-verification=rXBh6MIyrCY8J8Uq_Xd_AA1NpryQkBaPk5G8dtSpuKQ
- stripe-verification=6264a46b80a8dadd160716d09d034547ceb3f2cb5831760dc3e41d22c66986b8
- SPFv=spf1 a include:_spf.google.com include:sendgrid.net include:mail.zendesk.com ~all
- MS=3F4B5344525FD843B8AF910D280AF308D9FC9C1A
- detectify-verification=d8aa8923ee3948a69ca0ac304502489e
Full email verification for studysmarter.de
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