java.com.tw - robtex.com
java.com.tw
| DNSSEC | ⚠️ Not signed | ||||||
| A | 220.228.6.21🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| NS | dns1.f1.com.tw ⭐ | ||||||
| A | 218.32.213.234🇹🇼 NCIC-TW218.32.192.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| PTR | sp234.f1.com.tw | ||||||
| NS | dns2.f1.com.tw | ||||||
| A | 220.228.6.17🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| MX | java.com.tw ⭐ | ||||||
| A | 220.228.6.21🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| MX | www.java.com.tw(14) | ||||||
| A | 220.228.6.21🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| SOA | dns1.f1.com.twohgo@ms23.hinet.net 2000-11-01 #8 | ||||||
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=2006344840 | ||||||
MX for
java.com.tw |
Subdomains
www.java.com.tw |
Same first word
Similar names
DNS History
8 records (5 active, 3 former)
●MXjava.com.tw2015-08-26 → 2026-04-23 · 2 obs
● 2026-04-23 21:50:16
●MXwww.java.com.tw2015-08-26 → 2026-04-23 · 2 obs
● 2026-04-23 21:50:16
●A220.228.6.212026-04-18 → 2026-04-23 · 3 obs
● 2026-04-18 16:47:24
● 2026-04-23 21:50:16
○A220.228.6.422018-01-29 → 2018-01-29 · 4 obs
● 2018-01-29 00:06:06
○ 2026-03-27 15:09:06
○ 2026-04-23 21:50:16
○A220.228.6.592015-10-26 → 2026-04-13 · 8 obs
● 2015-10-26 11:16:58
● 2017-07-09 23:29:38
○ 2018-01-29 00:06:06
● 2026-03-27 15:09:06
● 2026-04-13 02:17:02
○ 2026-04-18 16:47:24
○ 2026-04-23 21:50:16
○A61.66.228.472015-08-26 → 2015-09-19 · 4 obs
● 2015-09-19 14:55:58
○ 2015-10-26 11:16:58
○ 2026-04-23 21:50:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com.tw | e.twnic.net.tw, h.twnic.net.tw, g.twnic.net.tw, h.dns.tw... | - |
| java.com.tw | dns2.f1.com.tw, dns1.f1.com.tw | 2 records |
✅ Authoritative Response
Server:218.32.213.234
NS records: dns2.f1.com.tw, dns1.f1.com.tw
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for com.tw (unsigned zone)
⏱️ Timing
Total: 603ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 220.228.6.21 |
| NS | 2 | dns2.f1.com.tw, dns1.f1.com.tw |
| MX | 2 | java.com.tw (pri: 10), www.java.com.tw (pri: 14) |
| SOA | 1 | dns1.f1.com.tw ohgo.ms23.hinet.net |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns2.f1.com.tw, dns1.f1.com.tw)
Analysis
Hierarchy
java.com.tw is the parent of www.java.com.tw.
Mail Server Role
java.com.tw serves as the mail server for java.com.tw.
www.java.com.tw is commonly used as a mail server with java.com.tw.
IP Addresses
java.com.tw points to IP number 220.228.6.21.
For instance, other host names 7775m.com, www.7755e.com, 4awt.com, c85cc.info and www.3ev1.com share IP numbers with java.com.tw.
Name Servers
java.com.tw is delegated to two name servers: dns1.f1.com.tw and dns2.f1.com.tw.
java.com.tw uses the same name server setup as other domains such as live176.com, capatina.com.tw, f-line.com.tw, fofolin.com and ut-av.com.
java.com.tw shares name servers with other domains at least partially, for example av0204.com, ez300.com, e44.info, 777-match.com and 222meme.com.
These name servers are commonly used alongside ns1.oknet.tw, ns2.oknet.tw, sp234.f1.com.tw, ns1.icstock.com.tw, ns2.icstock.com.tw and sf243.f1.com.tw.
Host names with one IP number:
dns1.f1.com.tw points to: 218.32.213.234.
dns2.f1.com.tw points to: 220.228.6.17.
Mail Servers
Two mail servers handle java.com.tw: java.com.tw and www.java.com.tw.
Host names with a single IP
java.com.tw points to: 220.228.6.21
www.java.com.tw points to: 220.228.6.21
Host names pointing to 220.228.6.21: java.com.tw and www.java.com.tw