mail.kc-u.jp - robtex.com
mail.kc-u.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 164.46.109.81🇯🇵 IDC164.46.64.0/18 Frontier Inc. | ||||||
| PTR | deer-blue-0a434c3f19d6042c.znlc.jp | ||||||
| MX | mail.kc-u.jp ⭐ | ||||||
| A | 164.46.109.81🇯🇵 IDC164.46.64.0/18 Frontier Inc. | ||||||
| PTR | deer-blue-0a434c3f19d6042c.znlc.jp | ||||||
kc-u.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 164.46.109.81🇯🇵 IDC164.46.64.0/18 Frontier Inc. | ||||||
| NS | ns-1690.awsdns-19.co.uk ⭐ | ||||||
| NS | ns-1521.awsdns-62.org | ||||||
| NS | ns-184.awsdns-23.com | ||||||
| NS | ns-572.awsdns-07.net | ||||||
| MX | mail.kc-u.jp ⭐ | ||||||
| TXT | v=spf1 ip4:164.46.109.81 mx ~all | ||||||
| SOA | ns-1690.awsdns-19.co.ukawsdns-hostmaster@amazon.com serial=1 | ||||||
WOT: SAFE (64/100)
MX for
Same first word
Similar names
DNS History
5 records (2 active, 3 former)
●MXmail.kc-u.jp2015-08-10 → 2026-05-14 · 2 obs
● 2015-08-10 00:32:52
● 2026-05-14 09:08:54
● 2026-05-14 09:08:54
○MXmx1.firstserver.ne.jp2015-08-10 → 2017-01-01 · 4 obs
● 2015-08-10 00:32:52
● 2017-01-01 02:34:06
○ 2026-04-29 01:29:08
○ 2026-05-14 09:08:54
● 2017-01-01 02:34:06
○ 2026-04-29 01:29:08
○ 2026-05-14 09:08:54
○MXmx2.firstserver.ne.jp2015-08-10 → 2017-01-01 · 4 obs
● 2015-08-10 00:32:52
● 2017-01-01 02:34:06
○ 2026-04-29 01:29:08
○ 2026-05-14 09:08:54
● 2017-01-01 02:34:06
○ 2026-04-29 01:29:08
○ 2026-05-14 09:08:54
●A164.46.109.812026-04-29 → 2026-05-14 · 3 obs
○ 2017-01-01 02:34:06
● 2026-04-29 01:29:08
● 2026-05-14 09:08:54
● 2026-04-29 01:29:08
● 2026-05-14 09:08:54
○A203.137.81.2062015-08-10 → 2017-01-01 · 4 obs
● 2015-08-10 00:32:52
● 2017-01-01 02:34:06
○ 2026-04-29 01:29:08
○ 2026-05-14 09:08:54
● 2017-01-01 02:34:06
○ 2026-04-29 01:29:08
○ 2026-05-14 09:08:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| kc-u.jp | ns-184.awsdns-23.com, ns-572.awsdns-07.net, ns-1521.awsdns-62.org, ns-1690.awsdns-19.co.uk | - |
✅ Authoritative Response
Server:205.251.197.241
NS records: ns-184.awsdns-23.com, ns-572.awsdns-07.net, ns-1521.awsdns-62.org, ns-1690.awsdns-19.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kc-u.jp (unsigned zone)
⏱️ Timing
Total: 821ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 164.46.109.81 |
| MX | 1 | mail.kc-u.jp (pri: 100) |
Analysis
Mail Server Role
mail.kc-u.jp serves as the mail server for kc-u.jp and mail.kc-u.jp.
IP Addresses
mail.kc-u.jp points to a single IP address: 164.46.109.81.
Other host names, for instance kc-u.jp, share IP numbers with mail.kc-u.jp.
Mail Servers
Mail for mail.kc-u.jp is handled by a single mail server, mail.kc-u.jp.
mail.kc-u.jp shares the same mail server setup as other domains, for instance kc-u.jp.
Host mail.kc-u.jp points to IP 164.46.109.81.