arith.com.tw - robtex.com
arith.com.tw
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ex2016.arith.com.tw ⭐ | ||||||
| A | 211.72.221.203🇹🇼 HiNet211.72.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd. | ||||||
| PTR | mbs.arith.com.tw | ||||||
| NS | dns1.arith.com.tw | ||||||
| A | 211.72.221.203🇹🇼 HiNet211.72.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd. | ||||||
| PTR | mbs.arith.com.tw | ||||||
| NS | dns2.arith.com.tw ⚠️ Not in zone NS records | ||||||
| MX | smtp.cwsi.com.tw ⭐ | ||||||
| A | 150.116.34.58🇹🇼 Peicity-AS-TW150.116.32.0/20 Customer Route - LOA provided | ||||||
| PTR | 58-34-116-150-static.chief.net.tw | ||||||
| MX | mail.arith.com.tw(10) | ||||||
| A | 211.72.221.203🇹🇼 HiNet211.72.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd. | ||||||
| PTR | mbs.arith.com.tw | ||||||
| TXT | v=spf1 mx ip4:211.72.221.203 include:spf.ms.hinet.net ~all | ||||||
| SOA | ex2016.arith.com.twhostmaster@arith.com.tw serial=21 | ||||||
com.tw
| DNSSEC | ⚠️ Not signed | ||||||
| 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=2006341522 | ||||||
Subdomains
Same first word
Similar names
DNS History
8 records (5 active, 3 former)
●NSdns1.arith.com.tw2015-08-07 → 2026-04-13 · 2 obs
● 2026-04-13 00:50:28
●NSdns2.arith.com.tw2015-08-07 → 2026-04-13 · 2 obs
● 2026-04-13 00:50:28
●NSex2016.arith.com.tw2026-04-10 → 2026-04-13 · 3 obs
● 2026-04-10 11:05:58
● 2026-04-13 00:50:28
●MXmail.arith.com.tw2015-08-07 → 2026-04-13 · 6 obs
● 2016-06-21 17:59:28
○ 2016-12-02 23:46:16
○ 2016-12-20 03:26:04
● 2026-04-10 11:05:58
● 2026-04-13 00:50:28
○MXmbs.arith.com.tw2016-12-02 → 2016-12-20 · 5 obs
● 2016-12-02 23:46:16
● 2016-12-20 03:26:04
○ 2026-04-10 11:05:58
○ 2026-04-13 00:50:28
○MXsmtp.arith.com.tw2015-08-07 → 2016-12-02 · 4 obs
● 2016-12-02 23:46:16
○ 2016-12-20 03:26:04
○ 2026-04-13 00:50:28
●MXsmtp.cwsi.com.tw2016-12-20 → 2026-04-13 · 3 obs
● 2016-12-20 03:26:04
● 2026-04-13 00:50:28
○A211.72.221.2032015-08-07 → 2016-06-21 · 4 obs
● 2016-06-21 17:59:28
○ 2016-12-02 23:46:16
○ 2026-04-13 00:50:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com.tw | c.twnic.net.tw, g.twnic.net.tw, b.twnic.net.tw, d.twnic.net.tw... | - |
| arith.com.tw | dns1.arith.com.tw, dns2.arith.com.tw | 2 records |
✅ Authoritative Response
Server:211.72.221.203
NS records: dns1.arith.com.tw, dns2.arith.com.tw
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for com.tw (unsigned zone)
⏱️ Timing
Total: 675ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 1 | dns1.arith.com.tw |
| MX | 2 | mail.arith.com.tw (pri: 10), smtp.cwsi.com.tw (pri: 5) |
| TXT | 1 | v=spf1 mx ip4:211.72.221.203 include:spf |
| SOA | 1 | ex2016.arith.com.tw hostmaster.arith.com |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (dns2.arith.com.tw, dns1.arith.com.tw)
Analysis
Hierarchy
arith.com.tw is parent of mail.arith.com.tw, dns1.arith.com.tw and ex2016.arith.com.tw.
Name Servers
arith.com.tw is delegated to three name servers: dns1.arith.com.tw, dns2.arith.com.tw and ex2016.arith.com.tw.
Host names with one IP number: dns1.arith.com.tw and ex2016.arith.com.tw point to 211.72.221.203.
Mail Servers
Two mail servers mail.arith.com.tw and smtp.cwsi.com.tw handle arith.com.tw.
arith.com.tw shares at least partially some mail servers with other domains, for example pronto-taiwan.com.tw, cwsi.com.tw, weikaiforwarder.com.tw and kjh.com.tw.
these mail servers are often used with mail.pronto-taiwan.com.tw, mail.cwsi.com.tw, mail.weikaiforwarder.com.tw, mbs01.kjh.com.tw and mbs02.kjh.com.tw.
Host names with a single IP:
mail.arith.com.tw resolves to 211.72.221.203.
smtp.cwsi.com.tw resolves to 150.116.34.58.