mail.mast-c.com - robtex.com

mail.mast-c.com

DNSSEC⚠️ Not signed
A2407:d600:0:105:210:172:223:64🇯🇵 MIRAI2407:d600::/32 Mirai Communication Network Inc. X-Keiro: jprs@mirai.ad.jp
PTRsv1.mcnx.jp
A210.172.223.64🇯🇵 MIRAI210.172.192.0/19 PACNET (proxy-registered route object)

mast-c.com

DNSSEC⚠️ Not signed
A2407:d600:0:105:210:172:223:64🇯🇵 MIRAI2407:d600::/32 Mirai Communication Network Inc. X-Keiro: jprs@mirai.ad.jp
A210.172.223.64🇯🇵 MIRAI210.172.192.0/19 PACNET (proxy-registered route object)
NSmast-c.com ⭐
NSns1.mcnx.jp
NSns2.mcnx.jp
MXsv1.mcnx.jp ⭐
TXTv=spf1 +ip4:210.172.223.64 +ip6:2407:d600::105:210:172:223:64 include:spf.bmv...
TXTgoogle-site-verification=DkveCgGcuXh8UbRtYPS6NDRQPlfmNVQtrGPEsuaHh-o
SOAmast-c.comhostmaster@mast-c.com 2026-04-11 #1

Same first word

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DNS History

3 records (2 active, 1 former)

20162017201820192020202120222023202420252026A210.172.223.642407:d600:0:105:210:172:223:64210.143.101.98
○A210.143.101.982015-04-15 → 2015-04-15 · 3 obs
● 2015-04-15 13:43:44
○ 2015-10-10 20:17:38
○ 2026-04-25 01:14:16
●A210.172.223.642026-03-05 → 2026-04-25 · 3 obs
○ 2015-10-10 20:17:38
● 2026-03-05 02:32:16
● 2026-04-25 01:14:16
●A2407:d600:0:105:210:172:223:642026-03-05 → 2026-04-25 · 3 obs
○ 2015-10-10 20:17:38
● 2026-03-05 02:32:16
● 2026-04-25 01:14:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comi.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net...-
mast-c.comns1.mcnx.jp, ns2.mcnx.jp-

✅ Authoritative Response

Server:210.172.222.213

NS records: ns1.mcnx.jp, ns2.mcnx.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mast-c.com (unsigned zone)

⏱️ Timing

Total: 645ms | Queries: -

📄 Records

TypeCountSample Data
A1210.172.223.64
AAAA12407:d600:0:105:210:172:223:64

Analysis

IP Addresses

mail.mast-c.com points to two IP numbers: 2407:d600:0:105:210:172:223:64 and 210.172.223.64.

Other host names, for instance aichi-kouryu.jp, acs1.mmrs.jp, aichikouryu.acs1.mmrs.jp, incom.acs1.mmrs.jp and www.jqr.jp share IP numbers with mail.mast-c.com.