8
records
Name Servers
TTL
NS
—
10m
NS
—
10m
specbook.online. 600 IN NS u1.hoster.by. specbook.online. 600 IN NS u2.hoster.by.
SOA Details
TTL
20m
SOA
Responsible
support.hoster.by
SOA
Serial
2026070806
SOA
Times
Refresh
12h
Retry
2h
Expire
7d
Minimum TTL
1h
specbook.online. 1200 IN SOA u1.hoster.by. support.hoster.by. 2026070806 43200 7200 604800 3600
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
TTL
No DMARC TXT record was returned (expected at `_dmarc.<domain>` with `v=DMARC1`). Without DMARC you cannot publish receiver policy or standard aggregate failure reports (RUA).
DKIM
TTL
No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | include |
|
||
| ~ Softfail | all |
—
|
|
20m
specbook.online. 1200 IN TXT "v=spf1 include:_spf.firebasemail.com ~all"
MTA-STS
TTL
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
firebase=psychology-859f3
20m
google-site-verification=SXjKD81dy4zVyutD5Xj_F-yKEYTSPfz7qgubw3IPzpM
20m
TXT
—
hosting-site=psychology-859f3
20m
specbook.online. 1200 IN TXT "firebase=psychology-859f3" specbook.online. 1200 IN TXT "google-site-verification=SXjKD81dy4zVyutD5Xj_F-yKEYTSPfz7qgubw3IPzpM" specbook.online. 1200 IN TXT "hosting-site=psychology-859f3"