Name Servers
jtbc.co.kr. 1199 IN NS a1-127.akam.net. jtbc.co.kr. 1199 IN NS a11-66.akam.net. jtbc.co.kr. 1199 IN NS a12-66.akam.net. jtbc.co.kr. 1199 IN NS a26-64.akam.net. jtbc.co.kr. 1199 IN NS a28-64.akam.net. jtbc.co.kr. 1199 IN NS a7-64.akam.net.
Mail Servers
jtbc.co.kr. 599 IN MX 10 sniper.joins.net. jtbc.co.kr. 599 IN MX 20 sniper2.joins.net. jtbc.co.kr. 599 IN MX 20 sniper2.joongang.co.kr.
SOA Details
jtbc.co.kr. 1199 IN SOA a1-127.akam.net. hostmaster.jtbc.co.kr. 2023121382 3600 600 604800 300
Certificate Authority Authorization
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
Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).
pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).
100Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.
Forensic (per-failure) reports. Often omitted for privacy or volume.
jtbc.co.kr. 599 IN DMARC v=DMARC1;p=none;
DKIM
No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.
SPF (Sender Policy Framework)
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | ip4 |
|
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| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| + Pass | include |
|
||
| + Pass | include |
|
||
| + Pass | include |
|
||
| ~ Softfail | all |
—
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|
jtbc.co.kr. 600 IN TXT "v=spf1 ip4:117.52.115.22 ip4:203.249.147.22 ip4:203.249.147.23 ip4:117.52.115.141 ip4:117.52.115.142 include:_spf.google.com include:mail.stibee.com include:spf.protection.outlook.com ~all"
MTA-STS
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
jtbc.co.kr. 600 IN TXT "_globalsign-domain-verification=2FH6lVbd0QEvxIBAUmHet7g3lXg93DMTxIJjnmJk_W" jtbc.co.kr. 600 IN TXT "anthropic-domain-verification-x90hpg=bNPu4QHo7w7sIIijevmyLKb5g" jtbc.co.kr. 600 IN TXT "google-site-verification=RehY7GtrlooAv45AzKGxvksJkgPEQbes5XaoA7bAYMU" jtbc.co.kr. 600 IN TXT "hibp-verify=dweb_r2hv8tgia9igm54ym4so3361" jtbc.co.kr. 600 IN TXT "_m6n5t12314p9jl6gq9dd3w8samxugkh"