citywork.jp - robtex.com
citywork.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.149.178.104🇯🇵 OCN153.128.0.0/10 (AS4713) CIDR BLOCK NTT Communications Corporation OTEMACHI PLACE WEST TOWER 2-3-1 Otemachi, Chiyoda-ku Tokyo 100-8019 JAPAN | ||||||
| PTR | citywork.jp | ||||||
| NS | mwns1.customer.ne.jp ⭐ | ||||||
| A | 210.150.23.210🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| NS | mwns2.customer.ne.jp | ||||||
| A | 202.17.152.183🇯🇵 InfoSphere202.17.128.0/19 INFOSPHERE | ||||||
| MX | citywork.jp ⭐ | ||||||
| A | 153.149.178.104🇯🇵 OCN153.128.0.0/10 (AS4713) CIDR BLOCK NTT Communications Corporation OTEMACHI PLACE WEST TOWER 2-3-1 Otemachi, Chiyoda-ku Tokyo 100-8019 JAPAN | ||||||
| PTR | citywork.jp | ||||||
| TXT | v=spf1 a include:_spf.bizmw.com ~all | ||||||
| SOA | mwns1.customer.ne.jphost-plan-ac@ntt.com serial=1613583271 | ||||||
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=1784955603 | ||||||
PTR for
MX for
citywork.jp |
Previously MX for
www.citywork.jp |
Subdomains
www.citywork.jp |
Same first word
Similar names
DNS History
10 records (4 active, 6 former)
●NSmwns1.customer.ne.jp2026-04-10 → 2026-07-25 · 3 obs
● 2026-04-10 10:04:32
● 2026-07-25 05:32:12
●NSmwns2.customer.ne.jp2026-04-10 → 2026-07-25 · 3 obs
● 2026-04-10 10:04:32
● 2026-07-25 05:32:12
○NSns-207.dns.jp-e1.cloudn-service.com2015-11-28 → 2017-02-17 · 5 obs
● 2015-11-28 15:31:00
● 2017-02-17 18:28:46
○ 2026-04-10 10:04:32
○ 2026-07-25 05:32:12
○NSns-208.dns.jp-w1.cloudn-service.com2015-11-28 → 2017-02-17 · 5 obs
● 2015-11-28 15:31:00
● 2017-02-17 18:28:46
○ 2026-04-10 10:04:32
○ 2026-07-25 05:32:12
○NSns-209.dns.us-e1.cloudn-service.com2015-11-28 → 2017-02-17 · 5 obs
● 2015-11-28 15:31:00
● 2017-02-17 18:28:46
○ 2026-04-10 10:04:32
○ 2026-07-25 05:32:12
○NSns1.secure.net2015-08-07 → 2015-08-07 · 3 obs
○ 2015-11-28 15:31:00
○ 2026-07-25 05:32:12
○NSns2.secure.net2015-08-07 → 2015-08-07 · 3 obs
○ 2015-11-28 15:31:00
○ 2026-07-25 05:32:12
●MXcitywork.jp2015-08-07 → 2026-07-25 · 2 obs
● 2026-07-25 05:32:12
●A153.149.178.1042026-04-10 → 2026-07-25 · 3 obs
● 2026-04-10 10:04:32
● 2026-07-25 05:32:12
○A60.43.172.1932015-08-07 → 2017-02-17 · 4 obs
● 2017-02-17 18:28:46
○ 2026-04-10 10:04:32
○ 2026-07-25 05:32:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | b.dns.jp, f.dns.jp, a.dns.jp, e.dns.jp... | - |
| citywork.jp | mwns1.customer.ne.jp, mwns2.customer.ne.jp | - |
✅ Authoritative Response
Server:210.150.23.210
NS records: mwns1.customer.ne.jp, mwns2.customer.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for citywork.jp (unsigned zone)
⏱️ Timing
Total: 1872ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.149.178.104 |
| NS | 2 | mwns1.customer.ne.jp, mwns2.customer.ne.jp |
| MX | 1 | citywork.jp (pri: 10) |
| TXT | 1 | v=spf1 a include:_spf.bizmw.com ~all |
| SOA | 1 | mwns1.customer.ne.jp host-plan-ac.ntt.co |
Analysis
Hierarchy
citywork.jp serves as the parent of www.citywork.jp.
Mail Server Role
citywork.jp handles its own mail, functioning as its own mail server.
IP Addresses
citywork.jp resolves to just one IP address, 153.149.178.104.
Name Servers
citywork.jp is served by two delegated name servers, mwns1.customer.ne.jp and mwns2.customer.ne.jp.
citywork.jp shares its NS records with other domains, for example artreform.com, ishikari-hosp.ecnet.jp, konakashokai.co.jp and two others.
mwns1.customer.ne.jp directs to 210.150.23.210 and mwns2.customer.ne.jp directs to 202.17.152.183; each host name points to exactly one IP number.
Mail Servers
citywork.jp is served by just one mail server: citywork.jp.
There is one IP number for citywork.jp: 153.149.178.104.