ext.tw - robtex.com
ext.tw
| DNSSEC | ⚠️ Not signed | ||||||
| NS | vdns1.seed.net.tw ⭐ | ||||||
| A | 61.20.46.203🇹🇼 FET-TW61.20.0.0/16 Far Eastone Telecommunications Co., Ltd No. 220, Gangchi Rd., Taipei 114 Taiwan | ||||||
| PTR | vdns1.seed.net.tw | ||||||
| NS | vdns3.seed.net.tw | ||||||
| A | 61.20.46.203🇹🇼 FET-TW61.20.0.0/16 Far Eastone Telecommunications Co., Ltd No. 220, Gangchi Rd., Taipei 114 Taiwan | ||||||
| PTR | vdns1.seed.net.tw | ||||||
| NS | vdns4.seed.net.tw | ||||||
| A | 61.20.46.204🇹🇼 FET-TW61.20.0.0/16 Far Eastone Telecommunications Co., Ltd No. 220, Gangchi Rd., Taipei 114 Taiwan | ||||||
| PTR | vdns2.seed.net.tw | ||||||
| SOA | vdns1.seed.net.twsysop@vdns1.seed.net 2025-08-01 #36 | ||||||
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 serial=2011036810 | ||||||
Previously NS for
ext.tw |
Previously MX for
ext.tw |
Subdomains
dns.ext.tw |
Same first word
Similar names
DNS History
7 records (3 active, 4 former)
○NSdns.ext.tw2015-09-01 → 2017-09-27 · 4 obs
● 2017-09-27 17:49:06
○ 2026-02-14 18:47:42
○ 2026-07-21 09:14:30
○NSext.tw2015-09-01 → 2017-09-27 · 4 obs
● 2017-09-27 17:49:06
○ 2026-02-14 18:47:42
○ 2026-07-21 09:14:30
●NSvdns1.seed.net.tw2026-02-14 → 2026-07-21 · 3 obs
● 2026-02-14 18:47:42
● 2026-07-21 09:14:30
●NSvdns3.seed.net.tw2026-02-14 → 2026-07-21 · 3 obs
● 2026-02-14 18:47:42
● 2026-07-21 09:14:30
●NSvdns4.seed.net.tw2026-02-14 → 2026-07-21 · 3 obs
● 2026-02-14 18:47:42
● 2026-07-21 09:14:30
○MXext.tw2015-09-01 → 2026-02-14 · 4 obs
● 2026-02-14 18:47:42
○ 2026-02-18 21:32:08
○ 2026-07-21 09:14:30
○A122.201.190.1162015-09-01 → 2026-02-14 · 4 obs
● 2026-02-14 18:47:42
○ 2026-02-18 21:32:08
○ 2026-07-21 09:14:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tw | a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw... | - |
| ext.tw | vdns3.seed.net.tw, vdns4.seed.net.tw | - |
✅ Authoritative Response
Server:61.20.46.203
NS records: vdns3.seed.net.tw, vdns4.seed.net.tw
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ext.tw (unsigned zone)
⏱️ Timing
Total: 1836ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | vdns4.seed.net.tw, vdns3.seed.net.tw |
| SOA | 1 | vdns1.seed.net.tw sysop.vdns1.seed.net |
Analysis
Hierarchy
ext.tw serves as the parent of dns.ext.tw.
Name Servers
ext.tw is served by three name servers: vdns1.seed.net.tw, vdns3.seed.net.tw and vdns4.seed.net.tw.
ext.tw has at least partial name server overlap with other domains, such as comv.tw, cont.com.tw, refrigerant.com.tw and two others.
It is common to find these name servers paired with the name servers vdns2.seed.net.tw.
Each of the three hostnames — vdns1.seed.net.tw, vdns3.seed.net.tw and vdns4.seed.net.tw — has a single IP address. vdns1.seed.net.tw and vdns3.seed.net.tw resolve to 61.20.46.203; vdns4.seed.net.tw resolves to 61.20.46.204.
vdns1.seed.net.tw and vdns3.seed.net.tw each have 61.20.46.203 IP addresses.