programminglabo.com - dns.ninja
programminglabo.com
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=1790329514 | ||||||
MX for
programminglabo.com |
Same first word
programminglabo.com |
Previous names
Next names
DNS History
8 records (7 active, 1 former)
●NSns1.xserver.jp2018-06-11 → 2026-09-25 · 2 obs
● 2026-09-25 09:53:48
●NSns2.xserver.jp2018-06-11 → 2026-09-25 · 2 obs
● 2026-09-25 09:53:48
●NSns3.xserver.jp2018-06-11 → 2026-09-25 · 2 obs
● 2026-09-25 09:53:48
●NSns4.xserver.jp2018-06-11 → 2026-09-25 · 2 obs
● 2026-09-25 09:53:48
●NSns5.xserver.jp2018-06-11 → 2026-09-25 · 2 obs
● 2026-09-25 09:53:48
●MXprogramminglabo.com2018-06-11 → 2026-09-25 · 2 obs
● 2026-09-25 09:53:48
○A183.90.250.52018-06-11 → 2018-06-11 · 3 obs
○ 2026-09-19 16:27:02
○ 2026-09-25 09:53:48
●A202.254.234.1212026-09-19 → 2026-09-25 · 3 obs
● 2026-09-19 16:27:02
● 2026-09-25 09:53:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| programminglabo.com | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | - |
✅ Authoritative Response
Server:202.226.37.247
NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for programminglabo.com (unsigned zone)
⏱️ Timing
Total: 1118ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.254.234.121 |
| NS | 5 | ns2.xserver.jp, ns1.xserver.jp... |
| MX | 1 | programminglabo.com (pri: 0) |
| TXT | 1 | v=spf1 +a:sv3120.xserver.jp +a:programmi |
| SOA | 1 | ns1.xserver.jp root.xserver.jp |
Analysis
Mail Server Role
programminglabo.com serves as a mail server for programminglabo.com.
IP Addresses
programminglabo.com has exactly one IP address — 202.254.234.121.
mwc.yokohama, nikkei-connect.jp, sakai-seikei.com plus two other host names have IP numbers in common with programminglabo.com.
Name Servers
Five name servers handle delegation for programminglabo.com: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
At least some of programminglabo.com's name servers are shared with other domains, for example aclaboratory.co.jp, imfcanada.com, ne.kg and two more.
These name servers tend to be deployed in combination with the name servers ns4.xserver.jp and ns5.xserver.jp.
Host names carrying three IP numbers:
ns1.xserver.jp resolves to three addresses: 202.226.36.164, 202.226.36.170 and 202.226.36.246.
ns4.xserver.jp resolves to three addresses: 183.90.224.226, 183.90.224.230 and 202.226.39.247.
ns5.xserver.jp resolves to three addresses: 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Host names resolving to a single IP address:
ns2.xserver.jp points to the IP address 35.72.43.26.
ns3.xserver.jp points to the IP address 202.226.36.247.
Mail Servers
programminglabo.com uses exactly one mail server, which is programminglabo.com.
There is one IP number for programminglabo.com: 202.254.234.121.