IPv4 Addresses

TTL

Name Servers

TTL

Mail Servers

TTL

SOA Details

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SOA Primary NS
8m
SOA Responsible
hostmaster.1und1.com
SOA Serial
2017060118
SOA Times
Refresh 8h
Retry 2h
Expire 7d
Minimum TTL 10m

Certificate Authority Authorization

TTL

No CAA records were returned at this registrable domain name. With no CAA policy, any public certificate authority (CA) may issue TLS certificates for names under this zone unless a parent publishes CAA; add issue / issuewild / iodef records to restrict issuance.

DMARC

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DMARC Policy

Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).

none quarantine reject
8m
DMARC Percentage

pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).

100
DMARC RUA

Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.

No aggregate report URIs (RUA).
DMARC RUF

Forensic (per-failure) reports. Often omitted for privacy or volume.

No forensic report URIs (RUF).

DKIM

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DKIM Selector protonmail
v=DKIM1 k=rsa
8m
Public Key
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4V0rNqFnawXF...

SPF (Sender Policy Framework)

TTL
SPF SPFv1
Qualifier Mechanism Target / value Valid Details
+ Pass include
~ Softfail all
8m

MTA-STS

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This hostname does not publish an MTA-STS policy (no v=STSv1 TXT at _mta-sts.<name> and/or no policy at https://mta-sts.<name>/.well-known/mta-sts.txt).

Text Content

TTL
protonmail-verification=6f429540b225ce88dc39bc2b84c40f1ca5bb350d
8m
TXT
hosting-site=gozo-treasure-hunt-2026-4-1
8m