mail3.omusan.com - robtex.com

mail3.omusan.com

DNSSEC⚠️ Not signed
A133.242.133.40🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
PTRsrv3.omusan.com
MXmail3.omusan.com ⭐
A133.242.133.40🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
PTRsrv3.omusan.com

omusan.com

DNSSEC⚠️ Not signed
A153.127.18.143🇯🇵 SAKURA-A153.127.0.0/17 (ISHIKARI) SAKURA Internet // HOKKAIDO JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan
NSmaster.dns.ne.jp ⭐
NSns1.dns.ne.jp
NSns2.dns.ne.jp
MXmail3.omusan.com ⭐
TXTv=spf1 +ip4:153.127.18.143 +ip4:133.242.133.40 -all
SOAmaster.dns.ne.jptech@sakura.ad.jp 2026-04-24 #1

MX for

omusan.com
mail3.omusan.com

Same first word

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DNS History

2 records (2 active, 0 former)

MXmail3.omusan.comA133.242.133.40
●MXmail3.omusan.com2026-06-21 → 2026-08-11 · 2 obs
● 2026-06-21 05:13:48
● 2026-08-11 17:24:14
●A133.242.133.402026-06-21 → 2026-08-11 · 2 obs
● 2026-06-21 05:13:48
● 2026-08-11 17:24:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comb.gtld-servers.net, l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net...-
omusan.comns1.dns.ne.jp, ns2.dns.ne.jp-

✅ Authoritative Response

Server:133.167.21.1

NS records: ns1.dns.ne.jp, ns2.dns.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for omusan.com (unsigned zone)

⏱️ Timing

Total: 1075ms | Queries: -

📄 Records

TypeCountSample Data
A1133.242.133.40
MX1mail3.omusan.com (pri: 10)

Analysis

Mail Server Role

mail3.omusan.com is the mail server for omusan.com and for mail3.omusan.com itself.

IP Addresses

mail3.omusan.com resolves to one IP address: 133.242.133.40.

mail.omusan.com and srv3.omusan.com are among other host names that share IP numbers with mail3.omusan.com.

Mail Servers

Mail for mail3.omusan.com is handled by one mail server — mail3.omusan.com.

The mail server configuration of mail3.omusan.com is identical to that of other domains — omusan.com being one example.

mail3.omusan.com directs to just one IP number, 133.242.133.40.