btf01.com - dns.ninja
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=1786016084 | ||||||
MX for
btf01.com |
Subdomains
www.btf01.com |
Same first word
btf01.com |
DNS History
8 records (8 active, 0 former)
●NSns1.icstock.com.tw2026-03-21 → 2026-08-06 · 2 obs
● 2026-08-06 11:41:32
●NSns2.icstock.com.tw2026-03-21 → 2026-08-06 · 2 obs
● 2026-08-06 11:41:32
●MXbtf01.com2026-03-21 → 2026-08-06 · 2 obs
● 2026-08-06 11:41:32
●MXwww.btf01.com2026-03-21 → 2026-08-06 · 2 obs
● 2026-08-06 11:41:32
●A220.228.6.712026-03-21 → 2026-08-06 · 2 obs
● 2026-08-06 11:41:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | d.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net, a.gtld-servers.net... | - |
| btf01.com | ns1.icstock.com.tw, ns2.icstock.com.tw, sp234.f1.com.tw | - |
✅ Authoritative Response
Server:218.32.213.228
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: 1494ms | 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
Hierarchy
btf01.com serves as the parent of www.btf01.com.
Mail Server Role
btf01.com acts as its own mail server.
As mail servers, www.btf01.com and btf01.com are regularly found together.
IP Addresses
btf01.com points to a single IP number: 220.228.6.71.
Additional host names — www.4zz4.com, www.173livec.com, c3zj.com and two others — share IP numbers with btf01.com.
Name Servers
Delegation for btf01.com is to five name servers: dns1.f1.com.tw, dns2.f1.com.tw, sp234.f1.com.tw and two others.
btf01.com has at least partial name server overlap with other domains, such as 173uthome.com, 0509hot.com, tw-rainbow.com and two others.
These name servers are frequently paired with the name servers ns1.icstock.com.tw, ns2.icstock.com.tw, sf243.f1.com.tw and two others.
Host names pointing to a single IP address:
dns1.f1.com.tw has the IP address 218.32.213.234.
dns2.f1.com.tw has the IP address 220.228.6.17.
sp234.f1.com.tw has the IP address 218.32.213.234.
ns1.icstock.com.tw has the IP address 218.32.213.228.
ns2.icstock.com.tw has the IP address 218.32.210.72.
Both dns1.f1.com.tw and sp234.f1.com.tw resolve to 218.32.213.234 IP addresses each.
Mail Servers
The domain btf01.com has two mail servers: btf01.com and www.btf01.com.
btf01.com resolves to 220.228.6.71; www.btf01.com resolves to the same IP address, 220.228.6.71.
Both btf01.com and www.btf01.com resolve to 220.228.6.71 IP addresses each.