jcbs.kr - robtex.com
jcbs.kr
| DNSSEC | ⚠️ Not signed | ||||||
| A | 221.139.49.7🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns1.nurihosting.com ⭐ | ||||||
| A | 211.215.17.210🇰🇷 SKB-NET211.212.0.0/14 SK Broadband | ||||||
| NS | ns1.web79.kr ⚠️ Not in zone NS records | ||||||
| A | 221.139.49.17🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns2.web79.kr ⚠️ Not in zone NS records | ||||||
| MX | mail.jcbs.kr ⭐ | ||||||
| A | 121.125.73.62🇰🇷 SKB-NET121.125.0.0/16 SK Broadband | ||||||
| TXT | v=spf1 ip4:221.139.49.4 ip4:221.139.49.15 ip4:221.139.49.7 ip4:121.125.73.51... | ||||||
| SOA | ns1.nurihosting.comsupport@nurihosting.com 2023-01-26 #1 | ||||||
kr
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | g.dns.kr ⭐ | ||||||
| NS | b.dns.kr | ||||||
| NS | c.dns.kr | ||||||
| NS | d.dns.kr | ||||||
| NS | e.dns.kr | ||||||
| NS | f.dns.kr | ||||||
| SOA | g.dns.krdomain-manager@nic.or.kr serial=2610180554 | ||||||
Subdomains
mail.jcbs.kr |
Same first word
Similar names
Previous names
jbwje.kr |
jbwjpogeun.kr |
jbwork.kr |
jbwrap.kr |
jbx.kr |
jc-company.kr |
jc1.kr |
jc2021.kr |
jca.kr |
jcac.kr |
jcacademy.kr |
jcair.kr |
jcall.kr |
jcas.kr |
jcassociates.kr |
jcb.kr |
jcbcard.kr |
jcbio.kr |
jcbrain.kr |
Next names
jccei.kr |
jcci.kr |
jccompany.kr |
jccorp.kr |
jcct.kr |
jcctv.kr |
jcd.kr |
jcduo.kr |
jce.kr |
jcent.kr |
jcera.kr |
jcexpo.kr |
jcfacademy.kr |
jcg.kr |
jcgo.kr |
jch.kr |
jchat.kr |
jchealthcare.kr |
jcheck.kr |
DNS History
7 records (5 active, 2 former)
●NSns1.nurihosting.com2018-05-13 → 2026-10-18 · 2 obs
● 2026-10-18 02:07:40
●NSns1.web79.kr2026-02-21 → 2026-10-18 · 3 obs
● 2026-02-21 16:33:12
● 2026-10-18 02:07:40
○NSns2.nurihosting.com2018-05-13 → 2018-05-13 · 3 obs
○ 2026-02-21 16:33:12
○ 2026-10-18 02:07:40
●NSns2.web79.kr2026-02-21 → 2026-10-18 · 3 obs
● 2026-02-21 16:33:12
● 2026-10-18 02:07:40
●MXmail.jcbs.kr2018-05-13 → 2026-10-18 · 2 obs
● 2026-10-18 02:07:40
○A221.139.49.42018-05-13 → 2018-05-13 · 3 obs
○ 2026-02-21 16:33:12
○ 2026-10-18 02:07:40
●A221.139.49.72026-02-21 → 2026-10-18 · 3 obs
● 2026-02-21 16:33:12
● 2026-10-18 02:07:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr... | 10 records |
| jcbs.kr | ns2.web79.kr, ns1.web79.kr | 2 records |
✅ Authoritative Response
Server:221.139.49.17
NS records: ns2.web79.kr, ns1.web79.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for jcbs.kr (unsigned zone)
⏱️ Timing
Total: 1455ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 221.139.49.7 |
| MX | 1 | mail.jcbs.kr (pri: 10) |
| TXT | 1 | v=spf1 ip4:221.139.49.4 ip4:221.139.49.1 |
| SOA | 1 | ns1.nurihosting.com support.nurihosting. |
📌 Glue Records Collected
Total: 12
In-bailiwick: 10 (b.dns.kr, c.dns.kr, d.dns.kr...)
Out-of-bailiwick: 2 (ns2.web79.kr, ns1.web79.kr)
Analysis
Hierarchy
jcbs.kr serves as the parent of mail.jcbs.kr.
IP Addresses
jcbs.kr directs to one IP number, which is 221.139.49.7.
Among the host names that share IP numbers with jcbs.kr are lucis.co.kr, mbc.or.kr, fivestaritt.co.kr and two others.
Name Servers
jcbs.kr is delegated to three name servers: ns1.nurihosting.com, ns1.web79.kr and ns2.web79.kr.
jcbs.kr has at least partial name server overlap with other domains, such as goodecos.com, mds-s.co.kr, drreiz.com and two others.
ns2.nurihosting.com, ns1.aramschool.co.kr and ns1.bver.co.kr — plus 7 other name servers — are commonly paired with these name servers.
ns1.nurihosting.com directs to 211.215.17.210 and ns1.web79.kr directs to 221.139.49.17; each host name points to exactly one IP number.
Mail Servers
jcbs.kr routes its mail through a single mail server, mail.jcbs.kr.
mail.jcbs.kr resolves to a single IP number: 121.125.73.62.