acol.com.tw - robtex.com
acol.com.tw
| DNSSEC | ⚠️ Not signed | ||||||
| A | 211.21.155.173🇹🇼 HiNet211.21.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd. | ||||||
| PTR | 211-21-155-173.hinet-ip.hinet.net | ||||||
| NS | dns.acol.com.tw ⭐ ⚠️ Not in parent delegation | ||||||
| A | 211.21.155.173🇹🇼 HiNet211.21.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd. | ||||||
| PTR | 211-21-155-173.hinet-ip.hinet.net | ||||||
| NS | acol.com.tw ⚠️ Not in zone NS records | ||||||
| A | 211.21.155.173🇹🇼 HiNet211.21.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd. | ||||||
| PTR | 211-21-155-173.hinet-ip.hinet.net | ||||||
| NS | mail.acol.com.tw ⚠️ Not in zone NS records | ||||||
| MX | mail.com.com.tw ⭐ | ||||||
| SOA | dns.acol.com.twacol@dns.acol.com.tw 2024-11-28 #11 | ||||||
com.tw
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.twnic.net.tw ⭐ | ||||||
| SOA | a.twnic.net.twsnw@twnic.net.tw serial=2006375284 | ||||||
NS for
acol.com.tw |
Subdomains
Same first word
acol.it |
acol.es |
acol.jp |
acol.org |
acol.com.au |
acol.in |
acol.fr |
acol.co.il |
acol.cn |
acol.cl |
acol.cz |
acol.ca |
acol.us |
acol.eu |
acol.nl |
acol.co.zw |
acol.com.tw |
acol.com.br |
acol.net |
acol.com |
acol.be |
acol.de |
Similar names
DNS History
5 records (5 active, 0 former)
●NSacol.com.tw2026-05-20 → 2026-06-23 · 2 obs
● 2026-06-23 16:26:20
●NSdns.acol.com.tw2026-05-20 → 2026-06-23 · 2 obs
● 2026-06-23 16:26:20
●NSmail.acol.com.tw2026-05-20 → 2026-06-23 · 2 obs
● 2026-06-23 16:26:20
●MXmail.com.com.tw2026-05-20 → 2026-06-23 · 2 obs
● 2026-06-23 16:26:20
●A211.21.155.1732026-05-20 → 2026-06-23 · 2 obs
● 2026-06-23 16:26:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tw | e.dns.tw, f.dns.tw, h.dns.tw, c.dns.tw... | 16 records |
| acol.com.tw | mail.acol.com.tw, acol.com.tw | 2 records |
✅ Authoritative Response
Server:211.21.155.173
NS records: mail.acol.com.tw, acol.com.tw
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for acol.com.tw (unsigned zone)
⏱️ Timing
Total: 1179ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 211.21.155.173 |
| NS | 1 | dns.acol.com.tw |
| MX | 1 | mail.com.com.tw (pri: 10) |
| SOA | 1 | dns.acol.com.tw acol.dns.acol.com.tw |
📌 Glue Records Collected
Total: 18
In-bailiwick: 16 (h.dns.tw, g.dns.tw, f.dns.tw...)
Out-of-bailiwick: 2 (anytld.apnic.net, anytld.apnic.net)
Analysis
Hierarchy
mail.acol.com.tw and dns.acol.com.tw each fall under acol.com.tw as their parent domain.
Name Server Role
The NS records for acol.com.tw point back to acol.com.tw itself.
dns.acol.com.tw and mail.acol.com.tw are often used as name servers in combination with acol.com.tw.
IP Addresses
acol.com.tw resolves to just one IP address, 211.21.155.173.
Two other host names, along with dns.acol.com.tw, con(0x666170)ps.com and 211-21-155-173.hinet-ip.hinet.net, also share IP numbers with acol.com.tw.
Name Servers
The NS records for acol.com.tw list three name servers: acol.com.tw, dns.acol.com.tw and mail.acol.com.tw.
Each of acol.com.tw and dns.acol.com.tw points to exactly one IP address: 211.21.155.173.
acol.com.tw and dns.acol.com.tw each have 211.21.155.173 IP addresses.
Mail Servers
The sole mail server for acol.com.tw is mail.com.com.tw.