tac.e-const.jp - robtex.com
tac.e-const.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 210.154.234.140🇯🇵 OCN210.154.0.0/16 (AS4713) CIDR BLOCK 5 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN | ||||||
| PTR | tac.e-const.jp | ||||||
| NS | mwns1.customer.ne.jp ⭐ ⚠️ Not in parent delegation | ||||||
| A | 210.150.23.210🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| NS | mwns2.customer.ne.jp ⚠️ Not in parent delegation | ||||||
| A | 202.17.152.183🇯🇵 InfoSphere202.17.128.0/19 INFOSPHERE | ||||||
| MX | tac.e-const.jp ⭐ | ||||||
| A | 210.154.234.140🇯🇵 OCN210.154.0.0/16 (AS4713) CIDR BLOCK 5 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN | ||||||
| PTR | tac.e-const.jp | ||||||
| TXT | v=spf1 a include:_spf.bizmw.com ~all | ||||||
| SOA | mwns1.customer.ne.jphost-plan-ac@ntt.com serial=1613835130 | ||||||
e-const.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.254.0.141🇯🇵 NTT-GIN-AS153.254.0.0/15 NTT DATA Global IP Network | ||||||
| NS | mwns1.customer.ne.jp ⭐ | ||||||
| NS | mwns2.customer.ne.jp | ||||||
| MX | e-const.jp ⭐ | ||||||
| SOA | mwns1.customer.ne.jphost-plan-ac@ntt.com serial=1616390326 | ||||||
PTR for
MX for
tac.e-const.jp |
Same first word
Similar names
DNS History
11 records (4 active, 7 former)
●NSmwns1.customer.ne.jp2026-04-14 → 2026-04-14 · 2 obs
● 2026-04-14 10:05:12
●NSmwns2.customer.ne.jp2026-04-14 → 2026-04-14 · 2 obs
● 2026-04-14 10:05:12
○NSns-213.dns.jp-e1.cloudn-service.com2016-02-03 → 2016-04-28 · 4 obs
● 2016-02-03 20:54:20
● 2016-04-28 14:43:48
○ 2026-04-14 10:05:12
○NSns-214.dns.jp-w1.cloudn-service.com2016-02-03 → 2016-04-28 · 4 obs
● 2016-02-03 20:54:20
● 2016-04-28 14:43:48
○ 2026-04-14 10:05:12
○NSns-215.dns.us-e1.cloudn-service.com2016-02-03 → 2016-04-28 · 4 obs
● 2016-02-03 20:54:20
● 2016-04-28 14:43:48
○ 2026-04-14 10:05:12
○NSns1.secure.net2015-05-15 → 2016-02-03 · 4 obs
● 2016-02-03 20:54:20
○ 2016-04-28 14:43:48
○ 2026-04-14 10:05:12
○NSns2.secure.net2015-05-15 → 2016-02-03 · 4 obs
● 2016-02-03 20:54:20
○ 2016-04-28 14:43:48
○ 2026-04-14 10:05:12
●MXtac.e-const.jp2015-05-15 → 2026-04-14 · 2 obs
● 2026-04-14 10:05:12
○A101.110.190.1422015-05-15 → 2015-05-15 · 3 obs
○ 2015-10-22 19:02:46
○ 2026-04-14 10:05:12
○A122.28.56.482015-10-22 → 2016-04-28 · 4 obs
● 2015-10-22 19:02:46
● 2016-04-28 14:43:48
○ 2026-04-14 10:05:12
●A210.154.234.1402026-04-14 → 2026-04-14 · 2 obs
● 2026-04-14 10:05:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| e-const.jp | mwns1.customer.ne.jp, mwns2.customer.ne.jp | - |
✅ Authoritative Response
Server:202.17.152.183
NS records: mwns1.customer.ne.jp, mwns2.customer.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for e-const.jp (unsigned zone)
⏱️ Timing
Total: 1499ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.154.234.140 |
| NS | 2 | mwns1.customer.ne.jp, mwns2.customer.ne.jp |
| MX | 1 | tac.e-const.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
Mail Server Role
tac.e-const.jp serves as the mail server for tac.e-const.jp.
IP Addresses
tac.e-const.jp points to an IP address: 210.154.234.140.
Name Servers
Two name servers mwns1.customer.ne.jp and mwns2.customer.ne.jp handle the delegation for tac.e-const.jp.
tac.e-const.jp shares the same name server setup as other domains, for instance k-okaden.co.jp, data-technology.co.jp, hitnet.co.jp, northwell.co.jp and sokm.co.jp.
Host names with one IP:
mwns1.customer.ne.jp points to: 210.150.23.210
mwns2.customer.ne.jp points to: 202.17.152.183
Mail Servers
tac.e-const.jp is handled by a single mail server.
The host name tac.e-const.jp points to IP 210.154.234.140.