ysdt.tw - robtex.com
ysdt.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 serial=2011025952 | ||||||
MX for
ysdt.tw |
Subdomains
mail.ysdt.tw |
Same first word
Similar names
DNS History
8 records (8 active, 0 former)
●NSns-1334.awsdns-38.org2020-03-20 → 2026-06-23 · 2 obs
● 2026-06-23 00:17:58
●NSns-1564.awsdns-03.co.uk2020-03-20 → 2026-06-23 · 2 obs
● 2026-06-23 00:17:58
●NSns-429.awsdns-53.com2020-03-20 → 2026-06-23 · 2 obs
● 2026-06-23 00:17:58
●NSns-896.awsdns-48.net2020-03-20 → 2026-06-23 · 2 obs
● 2026-06-23 00:17:58
●MXmail.ysdt.tw2020-03-20 → 2026-06-23 · 2 obs
● 2026-06-23 00:17:58
●MXysdt.tw2026-06-12 → 2026-06-23 · 3 obs
● 2026-06-12 08:09:10
● 2026-06-23 00:17:58
●A218.32.249.1762026-06-12 → 2026-06-23 · 2 obs
● 2026-06-23 00:17:58
●A220.130.162.912026-06-12 → 2026-06-23 · 2 obs
● 2026-06-23 00:17:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tw | b.dns.tw, c.dns.tw, f.dns.tw, e.dns.tw... | - |
| ysdt.tw | ns-896.awsdns-48.net, ns-1334.awsdns-38.org, ns-1564.awsdns-03.co.uk, ns-429.awsdns-53.com | - |
✅ Authoritative Response
Server:205.251.195.128
NS records: ns-896.awsdns-48.net, ns-1334.awsdns-38.org, ns-1564.awsdns-03.co.uk, ns-429.awsdns-53.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ysdt.tw (unsigned zone)
⏱️ Timing
Total: 772ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 218.32.249.176, 220.130.162.91 |
| NS | 4 | ns-1334.awsdns-38.org, ns-1564.awsdns-03.co.uk... |
| MX | 2 | ysdt.tw (pri: 10), mail.ysdt.tw (pri: 20) |
| TXT | 1 | v=spf1 include:_spf.ysdt.tw ~all |
| SOA | 1 | ns-896.awsdns-48.net awsdns-hostmaster.a |
Analysis
Hierarchy
The domain mail.ysdt.tw falls under the parent ysdt.tw.
Mail Server Role
ysdt.tw acts as its own mail server.
mail.ysdt.tw and ysdt.tw are commonly paired as mail servers.
IP Addresses
ysdt.tw points to the IP addresses 218.32.249.176 and 220.130.162.91
Additional host names — mail.ysdt.tw, hiiir-inc.com, 220-130-162-91.hinet-ip.hinet.net and two others — share IP numbers with ysdt.tw.
Name Servers
ysdt.tw has four authoritative name servers: ns-429.awsdns-53.com, ns-896.awsdns-48.net, ns-1334.awsdns-38.org and ns-1564.awsdns-03.co.uk.
At least some of ysdt.tw's name servers are shared with other domains, for example j-tech.net.au, voz777.win, softchalkcloudbeta.com and two more.
Four hostnames, each resolving to a pair of IP addresses: ns-429.awsdns-53.com directs to 205.251.193.173 and 2600:9000:5301:ad00::1; ns-896.awsdns-48.net directs to 205.251.195.128 and 2600:9000:5303:8000::1; ns-1334.awsdns-38.org directs to 205.251.197.54 and 2600:9000:5305:3600::1; ns-1564.awsdns-03.co.uk directs to 205.251.198.28 and 2600:9000:5306:1c00::1.
Mail Servers
Mail for ysdt.tw is routed through two mail servers — ysdt.tw and mail.ysdt.tw.
Host names with two IP numbers:
ysdt.tw resolves to 218.32.249.176 and 220.130.162.91.
Host names pointing to a single IP address:
mail.ysdt.tw resolves to 220.130.162.91.
The host names ysdt.tw and mail.ysdt.tw both resolve to 220.130.162.91 IP addresses.