ptbisco.com - robtex.com
ptbisco.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.direct.co.kr ⭐ | ||||||
| A | 211.115.203.112🇰🇷 HOSTWAY-AS-KR211.115.203.0/24 SejongTelecom.co.ltd | ||||||
| NS | ns1.sdsns.com | ||||||
| A | 211.115.203.112🇰🇷 HOSTWAY-AS-KR211.115.203.0/24 SejongTelecom.co.ltd | ||||||
| NS | ns2.sdsns.com | ||||||
| A | 211.239.157.110🇰🇷 HOSTWAY-AS-KR211.239.157.0/24 SejongTelecom.co.ltd | ||||||
| MX | mail.ptbisco.com ⭐ | ||||||
| A | 223.130.85.55🇰🇷 DIRECT-AS-KR223.130.85.0/24 | ||||||
| TXT | v=spf1 include:_spf1.mailnara.co.kr include:_spf2.mailnara.co.kr include:_spf... | ||||||
| SOA | ns1.direct.co.krfirechoi@sds.co.kr 2014-07-04 #13 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1785583607 | ||||||
Subdomains
mail.ptbisco.com |
Same first word
ptbisco.com |
Similar names
bitpsoc.com |
cpibots.com |
picbots.com |
tcpbois.com |
spbitco.lat |
bitcops.com |
bitcops.net |
boptics.com |
bsoptic.com |
copbits.com |
DNS History
4 records (4 active, 0 former)
●NSns1.direct.co.kr2015-07-01 → 2026-08-01 · 2 obs
● 2026-08-01 11:44:18
●MXmail.ptbisco.com2015-07-01 → 2026-08-01 · 2 obs
● 2026-08-01 11:44:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| ptbisco.com | ns1.sdsns.com, ns2.sdsns.com | 2 records |
✅ Authoritative Response
Server:211.239.157.110
NS records: ns1.sdsns.com, ns2.sdsns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ptbisco.com (unsigned zone)
⏱️ Timing
Total: 524ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns2.sdsns.com, ns1.sdsns.com |
| MX | 1 | mail.ptbisco.com (pri: 0) |
| TXT | 1 | v=spf1 include:_spf1.mailnara.co.kr incl |
| SOA | 1 | ns1.direct.co.kr firechoi.sds.co.kr |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.sdsns.com, ns2.sdsns.com)
Analysis
Hierarchy
ptbisco.com is the parent zone for mail.ptbisco.com.
Name Servers
DNS for ptbisco.com is handled by three authoritative name servers: ns1.sdsns.com, ns2.sdsns.com and ns1.direct.co.kr.
ptbisco.com partially shares its NS delegation with several other domains, including manners.co.kr, docomari.com, naurilog.co.kr and two others.
These name servers often co-occur with the name servers ns2.direct.co.kr.
ns1.sdsns.com and ns1.direct.co.kr both resolve to 211.115.203.112, while ns2.sdsns.com resolves to 211.239.157.110. All three hostnames map to exactly one IP address each.
Host names pointing to 211.115.203.112 IP addresses: ns1.sdsns.com and ns1.direct.co.kr.
Mail Servers
ptbisco.com uses one mail server — mail.ptbisco.com.
mail.ptbisco.com has exactly one IP number: 223.130.85.55.