16
records
Name Servers
TTL
20m
20m
studyflow.net.br. 1200 IN NS e.sec.dns.br. studyflow.net.br. 1200 IN NS f.sec.dns.br.
SOA Details
TTL
20m
SOA
Responsible
hostmaster.registro.br
SOA
Serial
2026238000
SOA
Times
Refresh
1d
Retry
15m
Expire
7d
Minimum TTL
15m
studyflow.net.br. 1200 IN SOA e.sec.dns.br. hostmaster.registro.br. 2026238000 86400 900 604800 900
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
studyflow.net.br. 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=med-system-2k26
20m
TXT
—
hosting-site=med-system-2k26
20m
studyflow.net.br. 1200 IN TXT "firebase=med-system-2k26" studyflow.net.br. 1200 IN TXT "hosting-site=med-system-2k26"
DNSSEC Public Keys
TTL
DNSKEY
257 3 13 cS2yx/PHLTQXRMGtHMhsNq6fRo7USXqvUoc95DX3ZRpEzGx90efP2Z1ahZecNN6Rc7yr3NJ30R2XT+hX5VmjoA==
20m
studyflow.net.br. 1200 IN DNSKEY 257 3 13 cS2yx/PHLTQXRMGtHMhsNq6fRo7USXqvUoc95DX3ZRpEzGx90efP2Z1ahZecNN6Rc7yr3NJ30R2XT+hX5VmjoA==
Delegation Signer
TTL
DS
55080 13 2 073563FD047BF23FBBB1BCAB14BE90AFE7FB1B1820C7DE23EB563FFB2CE79D30
20m
studyflow.net.br. 1200 IN DS 55080 13 2 073563FD047BF23FBBB1BCAB14BE90AFE7FB1B1820C7DE23EB563FFB2CE79D30
DNSSEC Signatures
TTL
RRSIG
SOA 13 3 3600 1791169241 1787709641 55080 studyflow.net.br LYMZ65758SS1RN5naV9/kBBPz+8H7Y9l4WlqN5YeHot2fk74DRdpZbu1CapNxcOucyuZy/qowh0JFPbPmj6dqg==
20m
RRSIG
TXT 13 3 3600 1791169241 1787709641 55080 studyflow.net.br OcsN9AInT9l3JwVp7DDspfgNI6+bANJ71qeT3hITXBJHhxqudc7cUl/xHKESpI+JtiKOndL+QskNcjHmffJzvw==
20m
RRSIG
NSEC 13 3 900 1791169241 1787709641 55080 studyflow.net.br VUbFE2Y2NoNTYPD7n5iaHr9k1ZsIr8SMPCx0UZ/N83R/1NRfYjUOkN2mLIqKAW57CPUo+qhg1uI774kgBFHLVw==
15m
RRSIG
DNSKEY 13 3 3600 1791169241 1787709641 55080 studyflow.net.br Yo03VwZeoI1pTXzr0qM3VoH/S7WphkPs/c4FgBduyoxA2Dv3u+ksXeYc/NWvLUFL00sdehMMoEVJJbOq+O2rSw==
20m
RRSIG
A 13 3 3600 1791169241 1787709641 55080 studyflow.net.br Fd8wCDMeZALidvCejbghx69G8E2mXHxU/xx5ixwImR1JdwMszl8g4SCv/5/oHHt7fEoP1fEpFDKyKPSmcUTYkg==
20m
RRSIG
NS 13 3 3600 1791169241 1787709641 55080 studyflow.net.br NfeZ4ciO8gjT5OSVIQ84HvVMG9US0aT0L5HwhXccyVUCwMqxXFb/n55hcbayaC62YBrgvbf3QP6niSIx+MUqLw==
20m
studyflow.net.br. 1200 IN RRSIG SOA 13 3 3600 1791169241 1787709641 55080 studyflow.net.br LYMZ65758SS1RN5naV9/kBBPz+8H7Y9l4WlqN5YeHot2fk74DRdpZbu1CapNxcOucyuZy/qowh0JFPbPmj6dqg== studyflow.net.br. 1200 IN RRSIG TXT 13 3 3600 1791169241 1787709641 55080 studyflow.net.br OcsN9AInT9l3JwVp7DDspfgNI6+bANJ71qeT3hITXBJHhxqudc7cUl/xHKESpI+JtiKOndL+QskNcjHmffJzvw== studyflow.net.br. 900 IN RRSIG NSEC 13 3 900 1791169241 1787709641 55080 studyflow.net.br VUbFE2Y2NoNTYPD7n5iaHr9k1ZsIr8SMPCx0UZ/N83R/1NRfYjUOkN2mLIqKAW57CPUo+qhg1uI774kgBFHLVw== studyflow.net.br. 1200 IN RRSIG DNSKEY 13 3 3600 1791169241 1787709641 55080 studyflow.net.br Yo03VwZeoI1pTXzr0qM3VoH/S7WphkPs/c4FgBduyoxA2Dv3u+ksXeYc/NWvLUFL00sdehMMoEVJJbOq+O2rSw== studyflow.net.br. 1200 IN RRSIG A 13 3 3600 1791169241 1787709641 55080 studyflow.net.br Fd8wCDMeZALidvCejbghx69G8E2mXHxU/xx5ixwImR1JdwMszl8g4SCv/5/oHHt7fEoP1fEpFDKyKPSmcUTYkg== studyflow.net.br. 1200 IN RRSIG NS 13 3 3600 1791169241 1787709641 55080 studyflow.net.br NfeZ4ciO8gjT5OSVIQ84HvVMG9US0aT0L5HwhXccyVUCwMqxXFb/n55hcbayaC62YBrgvbf3QP6niSIx+MUqLw==
DNSSEC Next Secure
TTL
NSEC
_acme-challenge.studyflow.net.br ["DNSKEY", "NSEC", "RRSIG", "TXT", "SOA", "NS", "A"]
15m
studyflow.net.br. 900 IN NSEC _acme-challenge.studyflow.net.br ["DNSKEY", "NSEC", "RRSIG", "TXT", "SOA", "NS", "A"]