jcs.com.tw - robtex.com
jcs.com.tw
com.tw
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.twnic.net.tw ⭐ ⚠️ Not in parent delegation | ||||||
| NS | anytld.apnic.net ⚠️ Not in parent delegation | ||||||
| NS | b.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | c.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | d.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | e.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | f.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | g.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | h.dns.tw ⚠️ Not in parent delegation | ||||||
| NS | h.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| SOA | a.twnic.net.twsnw@twnic.net.tw serial=2006391588 | ||||||
PTR for
NS for
jcs.com.tw |
Same first word
Similar names
DNS History
10 records (8 active, 2 former)
●NSjcs.com.tw2026-08-12 → 2026-08-13 · 3 obs
● 2026-08-12 08:12:14
● 2026-08-13 04:21:12
●NSns1.biz-himail.com2026-08-12 → 2026-08-13 · 3 obs
● 2026-08-12 08:12:14
● 2026-08-13 04:21:12
●NSns2.biz-himail.com2026-08-12 → 2026-08-13 · 3 obs
● 2026-08-12 08:12:14
● 2026-08-13 04:21:12
○MXbiz-mx1.hinet.net2015-08-24 → 2017-09-19 · 4 obs
● 2017-09-19 20:36:56
○ 2026-08-12 08:12:14
○ 2026-08-13 04:21:12
○MXbiz-mx2.hinet.net2015-08-24 → 2017-09-19 · 4 obs
● 2017-09-19 20:36:56
○ 2026-08-12 08:12:14
○ 2026-08-13 04:21:12
●MXmx1.biz-himail.com2026-08-12 → 2026-08-13 · 3 obs
● 2026-08-12 08:12:14
● 2026-08-13 04:21:12
●MXmx2.biz-himail.com2026-08-12 → 2026-08-13 · 3 obs
● 2026-08-12 08:12:14
● 2026-08-13 04:21:12
●A210.59.137.22015-08-24 → 2026-08-13 · 2 obs
● 2026-08-13 04:21:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tw | a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw... | - |
| com.tw | anytld.apnic.net, b.twnic.net.tw, d.twnic.net.tw, c.twnic.net.tw... | 17 records |
| jcs.com.tw | hins2.hinet.net, hins1.hinet.net, ns1.biz-himail.com, ns2.biz-himail.com | - |
✅ Authoritative Response
Server:203.74.116.196
NS records: hins2.hinet.net, hins1.hinet.net, ns1.biz-himail.com, ns2.biz-himail.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for jcs.com.tw (unsigned zone)
⏱️ Timing
Total: 1783ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.59.137.2 |
| NS | 2 | hins1.hinet.net, hins2.hinet.net |
| MX | 2 | mx2.biz-himail.com (pri: 0), mx1.biz-himail.com (pri: 0) |
| TXT | 4 | v=spf1 include:spf.biz-mail.hinet.net in, MS=ADE87D03F2707F82BF92FFA77FCD3D9A8B3D5... |
| SOA | 1 | jcs.com.tw hostmaster.hinet.net |
📌 Glue Records Collected
Total: 17
Out-of-bailiwick: 17 (h.twnic.net.tw, g.twnic.net.tw, f.twnic.net.tw...)
Analysis
Name Server Role
jcs.com.tw has jcs.com.tw as one of its name servers, making it self-hosted for DNS delegation.
Together with jcs.com.tw, the hosts hins1.hinet.net, hins2.hinet.net and ns1.biz-himail.com are frequently configured as name servers.
IP Addresses
jcs.com.tw directs to one IP number, which is 210.59.137.2.
Among the host names that share IP numbers with jcs.com.tw are tehho.com.tw, zonetex.com.tw, th-ad.com.tw and two others.
Name Servers
DNS for jcs.com.tw is delegated to five name servers: jcs.com.tw, ns1.biz-himail.com, ns2.biz-himail.com and two others.
The name servers of jcs.com.tw overlap at least partially with those of other domains — among them moritani.com.tw, norda.com.tw, wyt.com.tw and two more.
These name servers commonly co-occur with the name servers decentex.com.tw, chuanchen.com.tw, specco.com.tw and teamtw.com.tw.
Hosts with two IP numbers each:
ns1.biz-himail.com directs traffic to 168.95.192.36 and 2001:b000:168::192:36.
ns2.biz-himail.com directs traffic to 203.74.116.196 and 2001:b000:180:80d:203:74:116:196.
hins1.hinet.net directs traffic to 168.95.192.36 and 2001:b000:168::192:36.
hins2.hinet.net directs traffic to 203.74.116.196 and 2001:b000:180:80d:203:74:116:196.
Hosts that resolve to one IP address:
jcs.com.tw has the IP address 210.59.137.2.
Both ns1.biz-himail.com and hins1.hinet.net resolve to 2001:b000:168::192:36 IP addresses each.
Both ns1.biz-himail.com and hins1.hinet.net resolve to 168.95.192.36 IP addresses each.
Both ns2.biz-himail.com and hins2.hinet.net resolve to 2001:b000:180:80d:203:74:116:196 IP addresses each.
Both ns2.biz-himail.com and hins2.hinet.net resolve to 203.74.116.196 IP addresses each.
Mail Servers
The MX records for jcs.com.tw point to two mail servers: mx1.biz-himail.com and mx2.biz-himail.com.
jcs.com.tw has the same mail server arrangement as a number of other domains, for example ccftwn.com.tw, mildred.com.tw, gmicro.com.tw and two more.
jcs.com.tw shares at least some of its mail servers with other domains — for example jcipgroup.com, chuanchen.com.tw, specco.com.tw and two more.
The two host names mx1.biz-himail.com and mx2.biz-himail.com each have a pair of IP addresses: mx1.biz-himail.com has 210.59.137.6 and 210.59.137.7, and mx2.biz-himail.com has 210.59.137.16 and 210.59.137.17.