sdunion.jp - robtex.com
sdunion.jp
jp
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | z.dns.jp ⭐ | ||||||
| NS | a.dns.jp | ||||||
| NS | b.dns.jp | ||||||
| NS | c.dns.jp | ||||||
| NS | d.dns.jp | ||||||
| NS | e.dns.jp | ||||||
| NS | f.dns.jp | ||||||
| NS | g.dns.jp | ||||||
| NS | h.dns.jp | ||||||
| SOA | z.dns.jproot@dns.jp serial=1783256403 | ||||||
Subdomains
mx.sdunion.jp |
Same first word
Similar names
DNS History
10 records (6 active, 4 former)
●NSns-1227.awsdns-25.org2026-06-23 → 2026-07-05 · 3 obs
● 2026-06-23 00:29:12
● 2026-07-05 13:13:38
●NSns-1591.awsdns-06.co.uk2026-06-23 → 2026-07-05 · 3 obs
● 2026-06-23 00:29:12
● 2026-07-05 13:13:38
●NSns-451.awsdns-56.com2026-06-23 → 2026-07-05 · 3 obs
● 2026-06-23 00:29:12
● 2026-07-05 13:13:38
●NSns-976.awsdns-58.net2026-06-23 → 2026-07-05 · 3 obs
● 2026-06-23 00:29:12
● 2026-07-05 13:13:38
○NSns01.bridge-net.co.jp2015-07-01 → 2017-01-31 · 4 obs
● 2017-01-31 09:28:04
○ 2026-06-23 00:29:12
○ 2026-07-05 13:13:38
○NSns02.bridge-net.co.jp2015-07-01 → 2017-01-31 · 4 obs
● 2017-01-31 09:28:04
○ 2026-06-23 00:29:12
○ 2026-07-05 13:13:38
○NSns03.bridge-net.co.jp2015-07-01 → 2017-01-31 · 4 obs
● 2017-01-31 09:28:04
○ 2026-06-23 00:29:12
○ 2026-07-05 13:13:38
●MXmx.sdunion.jp2015-07-01 → 2026-07-05 · 2 obs
● 2026-07-05 13:13:38
○A210.233.72.1812015-07-01 → 2017-01-31 · 4 obs
● 2017-01-31 09:28:04
○ 2026-06-23 00:29:12
○ 2026-07-05 13:13:38
●A210.233.72.262026-06-23 → 2026-07-05 · 3 obs
● 2026-06-23 00:29:12
● 2026-07-05 13:13:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | h.dns.jp, d.dns.jp, f.dns.jp, g.dns.jp... | - |
| sdunion.jp | ns-1227.awsdns-25.org, ns-451.awsdns-56.com, ns-976.awsdns-58.net, ns-1591.awsdns-06.co.uk | - |
✅ Authoritative Response
Server:205.251.196.203
NS records: ns-1227.awsdns-25.org, ns-451.awsdns-56.com, ns-976.awsdns-58.net, ns-1591.awsdns-06.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sdunion.jp (unsigned zone)
⏱️ Timing
Total: 483ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.233.72.26 |
| NS | 4 | ns-1227.awsdns-25.org, ns-1591.awsdns-06.co.uk... |
| MX | 1 | mx.sdunion.jp (pri: 10) |
| TXT | 1 | v=spf1 ip4:219.127.208.0/24 ip4:221.250. |
| SOA | 1 | ns-451.awsdns-56.com awsdns-hostmaster.a |
Analysis
Hierarchy
The domain mx.sdunion.jp falls under the parent sdunion.jp.
IP Addresses
sdunion.jp points to a single IP number: 210.233.72.26.
Name Servers
sdunion.jp has four authoritative name servers: ns-451.awsdns-56.com, ns-976.awsdns-58.net, ns-1227.awsdns-25.org and ns-1591.awsdns-06.co.uk.
At least some of sdunion.jp's name servers are shared with other domains, for example namirial4ukraine.com, simufact.net, peopleinvogue.com and two more.
Four hostnames, each resolving to a pair of IP addresses: ns-451.awsdns-56.com directs to 205.251.193.195 and 2600:9000:5301:c300::1; ns-976.awsdns-58.net directs to 205.251.195.208 and 2600:9000:5303:d000::1; ns-1227.awsdns-25.org directs to 205.251.196.203 and 2600:9000:5304:cb00::1; ns-1591.awsdns-06.co.uk directs to 205.251.198.55 and 2600:9000:5306:3700::1.
Mail Servers
sdunion.jp has one mail server: mx.sdunion.jp.
There is one IP number for mx.sdunion.jp: 210.233.72.4.