itwork.jp - dns.ninja
itwork.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=1782094502 | ||||||
Subdomains
Same first word
Similar names
DNS History
15 records (10 active, 5 former)
●NSns-1088.awsdns-08.org2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
●NSns-1705.awsdns-21.co.uk2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
●NSns-290.awsdns-36.com2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
●NSns-882.awsdns-46.net2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
○NSns.at-link.ad.jp2015-08-03 → 2017-07-10 · 4 obs
● 2017-07-10 04:06:28
○ 2026-03-01 14:30:02
○ 2026-06-22 02:56:00
○NSns1.workgate.co.jp2015-08-03 → 2017-07-10 · 4 obs
● 2017-07-10 04:06:28
○ 2026-03-01 14:30:02
○ 2026-06-22 02:56:00
○NSsv.itwork.jp2015-08-03 → 2017-07-10 · 4 obs
● 2017-07-10 04:06:28
○ 2026-03-01 14:30:02
○ 2026-06-22 02:56:00
●MXalt1.aspmx.l.google.com2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
●MXalt2.aspmx.l.google.com2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
●MXaspmx.l.google.com2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
●MXaspmx2.googlemail.com2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
●MXaspmx3.googlemail.com2026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
○MXsv.itwork.jp2015-08-03 → 2017-07-10 · 4 obs
● 2017-07-10 04:06:28
○ 2026-03-01 14:30:02
○ 2026-06-22 02:56:00
○A202.218.47.1782015-08-03 → 2017-07-10 · 4 obs
● 2017-07-10 04:06:28
○ 2026-03-01 14:30:02
○ 2026-06-22 02:56:00
●A210.140.228.772026-03-01 → 2026-06-22 · 3 obs
● 2026-03-01 14:30:02
● 2026-06-22 02:56:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| itwork.jp | ns-290.awsdns-36.com, ns-882.awsdns-46.net, ns-1088.awsdns-08.org, ns-1705.awsdns-21.co.uk | - |
✅ Authoritative Response
Server:205.251.198.169
NS records: ns-290.awsdns-36.com, ns-882.awsdns-46.net, ns-1088.awsdns-08.org, ns-1705.awsdns-21.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for itwork.jp (unsigned zone)
⏱️ Timing
Total: 1845ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.140.228.77 |
| NS | 4 | ns-1088.awsdns-08.org, ns-1705.awsdns-21.co.uk... |
| MX | 5 | aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)... |
| TXT | 1 | google-site-verification=rTjfryThNlEwiAf |
| SOA | 1 | ns-1088.awsdns-08.org awsdns-hostmaster. |
Analysis
Hierarchy
itwork.jp sits above sv1.itwork.jp, static.itwork.jp and sv.itwork.jp in the domain hierarchy.
IP Addresses
itwork.jp directs to one IP number, which is 210.140.228.77.
Further host names like workgate.co.jp and machiwork.jp overlap in IP numbers with itwork.jp.
Name Servers
The domain itwork.jp is delegated to these four name servers: ns-290.awsdns-36.com, ns-882.awsdns-46.net, ns-1088.awsdns-08.org and ns-1705.awsdns-21.co.uk.
There is at least partial name server overlap between itwork.jp and other domains — dtvnwsyj9z2ds.cloudfront.net, kinsmanfunding.com, cartwheel.tech and two more among them.
All four hostnames — ns-290.awsdns-36.com, ns-882.awsdns-46.net, ns-1088.awsdns-08.org and ns-1705.awsdns-21.co.uk — resolve to two IP numbers apiece: ns-290.awsdns-36.com to 205.251.193.34 and 2600:9000:5301:2200::1; ns-882.awsdns-46.net to 205.251.195.114 and 2600:9000:5303:7200::1; ns-1088.awsdns-08.org to 205.251.196.64 and 2600:9000:5304:4000::1; ns-1705.awsdns-21.co.uk to 205.251.198.169 and 2600:9000:5306:a900::1.
Mail Servers
Five mail servers handle itwork.jp: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.
itwork.jp shares at least some of its mail servers with other domains — for example remedis.org, andrewlevy.co.za, deltaparkproject.com and two more.
It is common to find these mail servers paired with mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 more.
Hosts with two IP numbers each:
aspmx2.googlemail.com directs traffic to 108.177.123.26 and 2800:3f0:4003:c0f::1b.
aspmx3.googlemail.com directs traffic to 172.253.116.27 and 2a00:1450:400b:c02::1b.
aspmx.l.google.com directs traffic to 172.253.62.27 and 2607:f8b0:4004:c1b::1b.
alt1.aspmx.l.google.com directs traffic to 108.177.123.26 and 2800:3f0:4003:c0f::1a.
alt2.aspmx.l.google.com directs traffic to 172.253.116.27 and 2a00:1450:400b:c02::1b.
Both aspmx2.googlemail.com and alt1.aspmx.l.google.com resolve to 108.177.123.26 IP addresses each.
Both aspmx3.googlemail.com and alt2.aspmx.l.google.com resolve to 2a00:1450:400b:c02::1b IP addresses each.
Both aspmx3.googlemail.com and alt2.aspmx.l.google.com resolve to 172.253.116.27 IP addresses each.