duclas.com.tw - robtex.com
duclas.com.tw
com.tw
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.twnic.net.tw ⭐ | ||||||
| NS | anytld.apnic.net | ||||||
| NS | b.twnic.net.tw | ||||||
| NS | c.twnic.net.tw | ||||||
| NS | d.twnic.net.tw | ||||||
| NS | e.twnic.net.tw | ||||||
| NS | f.twnic.net.tw | ||||||
| NS | g.twnic.net.tw | ||||||
| NS | h.dns.tw | ||||||
| NS | h.twnic.net.tw | ||||||
| SOA | a.twnic.net.twsnw@twnic.net.tw serial=2006388091 | ||||||
Previously MX for
duclas.com.tw |
Subdomains
mail.duclas.com.tw |
Same first word
Similar names
DNS History
13 records (5 active, 8 former)
○NSalaserver.alapower.com.tw2017-02-11 → 2017-02-11 · 4 obs
● 2017-02-11 02:31:46
○ 2020-02-09 03:37:24
○ 2026-08-02 11:43:22
○NSalaserver.oea.com.tw2015-05-18 → 2015-12-29 · 4 obs
● 2015-12-29 20:30:56
○ 2017-02-11 02:31:46
○ 2026-08-02 11:43:22
●NSdns.twmail.org2020-02-09 → 2026-08-02 · 3 obs
● 2020-02-09 03:37:24
● 2026-08-02 11:43:22
●NSdns2.twmail.org2020-02-09 → 2026-08-02 · 3 obs
● 2020-02-09 03:37:24
● 2026-08-02 11:43:22
○MXduclas.com.tw2017-02-11 → 2017-02-11 · 4 obs
● 2017-02-11 02:31:46
○ 2020-02-09 03:37:24
○ 2026-08-02 11:43:22
○MXmail.duclas.com.tw2015-05-18 → 2015-12-29 · 4 obs
● 2015-12-29 20:30:56
○ 2017-02-11 02:31:46
○ 2026-08-02 11:43:22
●MXntvirus.url.com.tw2020-02-09 → 2026-08-02 · 3 obs
● 2020-02-09 03:37:24
● 2026-08-02 11:43:22
●MXntvirus2.url.com.tw2020-02-09 → 2026-08-02 · 3 obs
● 2020-02-09 03:37:24
● 2026-08-02 11:43:22
○A113.61.233.62015-05-18 → 2015-05-18 · 3 obs
○ 2015-10-18 08:33:00
○ 2026-08-02 11:43:22
○A211.79.125.92015-10-18 → 2015-10-18 · 4 obs
● 2015-10-18 08:33:00
○ 2015-12-29 20:30:56
○ 2026-08-02 11:43:22
○A60.249.5.762015-12-29 → 2017-02-11 · 5 obs
● 2015-12-29 20:30:56
● 2017-02-11 02:31:46
○ 2020-02-09 03:37:24
○ 2026-08-02 11:43:22
○A61.221.12.122020-02-09 → 2020-02-09 · 4 obs
● 2020-02-09 03:37:24
○ 2026-05-18 14:34:12
○ 2026-08-02 11:43:22
●A61.221.12.932026-05-18 → 2026-08-02 · 3 obs
● 2026-05-18 14:34:12
● 2026-08-02 11:43:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com.tw | e.twnic.net.tw, h.dns.tw, c.twnic.net.tw, a.twnic.net.tw... | - |
| duclas.com.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 com.tw (unsigned zone)
⏱️ Timing
Total: 1155ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 61.221.12.93 |
| 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 |
Analysis
Hierarchy
mail.duclas.com.tw is delegated beneath duclas.com.tw.
IP Addresses
duclas.com.tw has exactly one IP address — 61.221.12.93.
toa-twn.com.tw, rewintech.com, aj-tw.com.tw plus two other host names have IP numbers in common with duclas.com.tw.
Name Servers
duclas.com.tw is served by two delegated name servers, dns2.twmail.org and dns.twmail.org.
The name server configuration of duclas.com.tw is shared with other domains, for instance jannie.url.tw, kuroshio.org.tw, chaomama.com.tw and two others.
Each of the two host names carries two IP addresses: dns2.twmail.org points to 211.72.204.250 and 2001:b034:201:400:211:72:204:250, and dns.twmail.org points to 210.59.228.119 and 2001:b034:1:800:210:59:228:119.
Mail Servers
duclas.com.tw uses two mail servers, ntvirus2.url.com.tw and ntvirus.url.com.tw.
The mail server setup of duclas.com.tw matches that of other domains such as oeoeo.net, zenpo.com.tw, gat.com.tw and two others.
duclas.com.tw and other domains — im-dsp.com for instance — share at least some mail servers.
The hosts ntvirus2.url.com.tw and ntvirus.url.com.tw each point to four IP addresses: ntvirus2.url.com.tw resolves to 210.59.228.117, 210.59.228.172, 210.59.228.173 and 210.59.228.178 and ntvirus.url.com.tw directs to 210.59.228.117, 210.59.228.172, 210.59.228.173 and 210.59.228.178.
These two host names — ntvirus2.url.com.tw and ntvirus.url.com.tw — each point to 210.59.228.117 IP addresses.
These two host names — ntvirus2.url.com.tw and ntvirus.url.com.tw — each point to 210.59.228.172 IP addresses.
These two host names — ntvirus2.url.com.tw and ntvirus.url.com.tw — each point to 210.59.228.173 IP addresses.
These two host names — ntvirus2.url.com.tw and ntvirus.url.com.tw — each point to 210.59.228.178 IP addresses.