contech.tw - dns.ninja
contech.tw
tw
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.tw ⭐ | ||||||
| NS | anytld.apnic.net ⚠️ Not in parent delegation | ||||||
| NS | b.dns.tw | ||||||
| NS | c.dns.tw | ||||||
| NS | d.dns.tw | ||||||
| NS | e.dns.tw | ||||||
| NS | f.dns.tw | ||||||
| NS | g.dns.tw | ||||||
| NS | h.dns.tw | ||||||
| SOA | a.dns.twsnw@twnic.net.tw 2011-05-06 #52 | ||||||
Same first word
Similar names
DNS History
8 records (5 active, 3 former)
○NSadmns1.hinet.net2018-11-12 → 2018-11-12 · 3 obs
○ 2026-03-25 20:04:56
○ 2026-08-14 02:51:10
○NSadmns2.hinet.net2018-11-12 → 2018-11-12 · 3 obs
○ 2026-03-25 20:04:56
○ 2026-08-14 02:51:10
●NSdns.twmail.org2026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 20:04:56
● 2026-08-14 02:51:10
●NSdns2.twmail.org2026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 20:04:56
● 2026-08-14 02:51:10
●MXntvirus.url.com.tw2026-03-25 → 2026-08-14 · 2 obs
● 2026-08-14 02:51:10
●MXntvirus2.url.com.tw2026-03-25 → 2026-08-14 · 2 obs
● 2026-08-14 02:51:10
○A210.65.1.2312018-11-12 → 2018-11-12 · 3 obs
○ 2026-03-25 20:04:56
○ 2026-08-14 02:51:10
●A211.72.207.2092026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 20:04:56
● 2026-08-14 02:51:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tw | a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw... | 16 records |
| contech.tw | dns2.twmail.org, dns.twmail.org | - |
✅ Authoritative Response
Server:210.59.228.119
NS records: dns2.twmail.org, dns.twmail.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for contech.tw (unsigned zone)
⏱️ Timing
Total: 1600ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 211.72.207.209 |
| NS | 2 | dns2.twmail.org, dns.twmail.org |
| MX | 2 | ntvirus.url.com.tw (pri: 10), ntvirus2.url.com.tw (pri: 10) |
| TXT | 1 | v=spf1 a mx ip4:210.59.228.0/24 ip4:210. |
| SOA | 1 | dns.twmail.org admin.corp.url.com.tw |
📌 Glue Records Collected
Total: 16
In-bailiwick: 14 (a.dns.tw, a.dns.tw, b.dns.tw...)
Out-of-bailiwick: 2 (anytld.apnic.net, anytld.apnic.net)
Analysis
IP Addresses
contech.tw points to a single IP number: 211.72.207.209.
Additional host names — hi-vegetism.com, www.zipangguide.net, cbmp.com.tw and two others — share IP numbers with contech.tw.
Name Servers
contech.tw uses two name servers for its delegation: dns2.twmail.org and dns.twmail.org.
contech.tw shares its name server setup with other domains, including pistonpin.com.tw, tzg.com.tw, hdldt.com and two others.
contech.tw has some name servers in common with other domains such as iabtv.com, dqp.com.tw and sax.net.tw
The two host names dns2.twmail.org and dns.twmail.org each have a pair of IP addresses: dns2.twmail.org has 211.72.204.250 and 2001:b034:201:400:211:72:204:250, and dns.twmail.org has 210.59.228.119 and 2001:b034:1:800:210:59:228:119.
Mail Servers
contech.tw has two mail servers: ntvirus2.url.com.tw and ntvirus.url.com.tw.
contech.tw shares the same mail server setup as other domains, including berean.com.tw, iseoioi.com.tw, mobileshelving.com.tw and two others.
At least a portion of contech.tw's mail servers are also used by other domains, for example pressstore.com.tw.
Each of the hosts ntvirus2.url.com.tw and ntvirus.url.com.tw points to four IP numbers: ntvirus2.url.com.tw directs to 210.59.228.117, 210.59.228.172, 210.59.228.173 and 210.59.228.178 and ntvirus.url.com.tw points to 210.59.228.117, 210.59.228.172, 210.59.228.173 and 210.59.228.178.
Both ntvirus2.url.com.tw and ntvirus.url.com.tw resolve to 210.59.228.117 IP addresses each.
Both ntvirus2.url.com.tw and ntvirus.url.com.tw resolve to 210.59.228.172 IP addresses each.
Both ntvirus2.url.com.tw and ntvirus.url.com.tw resolve to 210.59.228.173 IP addresses each.
Both ntvirus2.url.com.tw and ntvirus.url.com.tw resolve to 210.59.228.178 IP addresses each.