sda4b.com - robtex.com
sda4b.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 220.228.6.89🇹🇼 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 | sda4b.com ⭐ | ||||||
| A | 220.228.6.89🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd. | ||||||
| MX | www.sda4b.com(14) | ||||||
| A | 220.228.6.89🇹🇼 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=1785817477 | ||||||
MX for
sda4b.com |
Subdomains
www.sda4b.com |
Same first word
sda4b.com |
Similar names
DNS History
8 records (8 active, 0 former)
●NSns1.icstock.com.tw2026-04-26 → 2026-08-04 · 2 obs
● 2026-08-04 04:45:28
●NSns2.icstock.com.tw2026-04-26 → 2026-08-04 · 2 obs
● 2026-08-04 04:45:28
●MXsda4b.com2026-04-26 → 2026-08-04 · 2 obs
● 2026-08-04 04:45:28
●MXwww.sda4b.com2026-04-26 → 2026-08-04 · 2 obs
● 2026-08-04 04:45:28
●A220.228.6.892026-04-26 → 2026-08-04 · 2 obs
● 2026-08-04 04:45:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| sda4b.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 sda4b.com (unsigned zone)
⏱️ Timing
Total: 1401ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 220.228.6.89 |
| NS | 2 | dns2.f1.com.tw, dns1.f1.com.tw |
| MX | 2 | sda4b.com (pri: 10), www.sda4b.com (pri: 14) |
| SOA | 1 | dns1.f1.com.tw ohgo.ms23.hinet.net |
Analysis
Hierarchy
www.sda4b.com is delegated beneath sda4b.com.
Mail Server Role
sda4b.com is listed as a mail server for itself.
www.sda4b.com and sda4b.com tend to appear jointly as mail servers.
IP Addresses
sda4b.com resolves to one IP address: 220.228.6.89.
www.king462.com, www.jubeed.com, www.88match.com and two other host names share IP numbers with sda4b.com.
Name Servers
sda4b.com has five name servers, which are dns1.f1.com.tw, dns2.f1.com.tw, sp234.f1.com.tw and two others.
There is at least partial name server overlap between sda4b.com and other domains — wacow-(0x736578).com, petofstar.com, plnew.com and two more among them.
It is common to find these name servers alongside the name servers ns1.icstock.com.tw, ns2.icstock.com.tw, ns1.oknet.tw and two others.
Hosts with just one IP address:
dns1.f1.com.tw points to the IP address 218.32.213.234.
dns2.f1.com.tw points to the IP address 220.228.6.17.
sp234.f1.com.tw points to the IP address 218.32.213.234.
ns1.icstock.com.tw points to the IP address 218.32.213.228.
ns2.icstock.com.tw points to the IP address 218.32.210.72.
These two host names — dns1.f1.com.tw and sp234.f1.com.tw — each point to 218.32.213.234 IP addresses.
Mail Servers
Two mail servers handle sda4b.com: sda4b.com and www.sda4b.com.
sda4b.com and www.sda4b.com share one IP address between them — 220.228.6.89.
These two host names — sda4b.com and www.sda4b.com — each point to 220.228.6.89 IP addresses.