btf01.com - robtex.com
btf01.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 220.228.6.71🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| NS | dns1.f1.com.tw ⭐ ⚠️ Not in parent delegation | ||||||
| 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 ⚠️ Not in parent delegation | ||||||
| A | 220.228.6.17🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| NS | ns1.icstock.com.tw ⚠️ Not in zone NS records | ||||||
| A | 218.32.213.228🇹🇼 NCIC-TW218.32.192.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| PTR | sp228.f1.com.tw | ||||||
| NS | ns2.icstock.com.tw ⚠️ Not in zone NS records | ||||||
| A | 218.32.210.72🇹🇼 NCIC-TW218.32.210.0/24 New Century InfoComm Tech Co., Ltd. | ||||||
| PTR | sp72.f1.com.tw | ||||||
| NS | sp234.f1.com.tw ⚠️ Not in zone NS records | ||||||
| A | 218.32.213.234🇹🇼 NCIC-TW218.32.192.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| PTR | sp234.f1.com.tw | ||||||
| MX | btf01.com ⭐ | ||||||
| A | 220.228.6.71🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| MX | www.btf01.com(14) | ||||||
| A | 220.228.6.71🇹🇼 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
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1774394827 | ||||||
MX for
btf01.com |
Same first word
btf01.com |
DNS History
8 records (8 active, 0 former)
●NSns1.icstock.com.tw2026-03-21 → 2026-03-24 · 2 obs
● 2026-03-24 23:38:20
●NSns2.icstock.com.tw2026-03-21 → 2026-03-24 · 2 obs
● 2026-03-24 23:38:20
●MXbtf01.com2026-03-21 → 2026-03-24 · 2 obs
● 2026-03-24 23:38:20
●MXwww.btf01.com2026-03-21 → 2026-03-24 · 2 obs
● 2026-03-24 23:38:20
●A220.228.6.712026-03-21 → 2026-03-24 · 2 obs
● 2026-03-24 23:38:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| btf01.com | ns1.icstock.com.tw, ns2.icstock.com.tw, sp234.f1.com.tw | - |
✅ Authoritative Response
Server:218.32.213.234
NS records: ns1.icstock.com.tw, ns2.icstock.com.tw, sp234.f1.com.tw
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for btf01.com (unsigned zone)
⏱️ Timing
Total: 1405ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 220.228.6.71 |
| NS | 2 | dns2.f1.com.tw, dns1.f1.com.tw |
| MX | 2 | btf01.com (pri: 10), www.btf01.com (pri: 14) |
| SOA | 1 | dns1.f1.com.tw ohgo.ms23.hinet.net |
Analysis
Mail Server Role
For btf01.com, the mail server is btf01.com.
www.btf01.com is a mail server commonly used with btf01.com.
IP Addresses
btf01.com resolves to one IP number: 220.228.6.71.
other host names including www.4zz4.com, www.173livec.com, c3zj.com, www.92c7.com and 774u.com share IP numbers with btf01.com.
Name Servers
btf01.com is delegated to five name servers: dns1.f1.com.tw, dns2.f1.com.tw, sp234.f1.com.tw, ns1.icstock.com.tw and ns2.icstock.com.tw.
btf01.com at least partially shares name servers with other domains, for instance av773.com, 0509hot.com, tw-rainbow.com, uu282.com and dudu190.com.
These name servers are commonly used with sf243.f1.com.tw, ns1.oknet.tw and ns2.oknet.tw.
Host names with a single IP:
dns1.f1.com.tw points to 218.32.213.234
dns2.f1.com.tw points to 220.228.6.17
sp234.f1.com.tw points to 218.32.213.234
ns1.icstock.com.tw points to 218.32.213.228
ns2.icstock.com.tw points to 218.32.210.72
Names pointing to 218.32.213.234: dns1.f1.com.tw and sp234.f1.com.tw
Mail Servers
btf01.com is handled by two mail servers: btf01.com and www.btf01.com.
Host names with a single IP:
btf01.com points to 220.228.6.71.
www.btf01.com points to 220.228.6.71.
Host names pointing to 220.228.6.71: btf01.com and www.btf01.com.