mail.mrkopt.com - robtex.com

mail.mrkopt.com

DNSSEC⚠️ Not signed
A160.16.205.133🇯🇵 SAKURA-B160.16.128.0/17 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan
PTRda65.willnet.ad.jp

mrkopt.com

DNSSEC⚠️ Not signed
A160.16.205.133🇯🇵 SAKURA-B160.16.128.0/17 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan
NSns1.willnet.ne.jp ⭐
NSns2.willnet.ne.jp
MXmail.mrkopt.com ⭐
TXTv=spf1 a mx include:spf01.willnet.ad.jp ~all
SOAns1.willnet.ne.jphostmaster@willnet.ne.jp 2021-10-22 #7

MX for

mrkopt.com

Same first word

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DNS History

2 records (1 active, 1 former)

20192020202120222023202420252026A160.16.205.133163.43.91.28
●A160.16.205.1332026-02-24 → 2026-04-09 · 3 obs
○ 2018-01-08 09:54:00
● 2026-02-24 14:58:18
● 2026-04-09 05:08:52
○A163.43.91.282018-01-08 → 2018-01-08 · 3 obs
● 2018-01-08 09:54:00
○ 2026-02-24 14:58:18
○ 2026-04-09 05:08:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net, e.gtld-servers.net...-
mrkopt.comns1.willnet.ne.jp, ns2.willnet.ne.jp-

✅ Authoritative Response

Server:163.43.103.130

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mrkopt.com (unsigned zone)

⏱️ Timing

Total: 930ms | Queries: -

📄 Records

TypeCountSample Data
A1160.16.205.133

Analysis

Mail Server Role

mail.mrkopt.com serves as a mail server for mrkopt.com.

IP Addresses

mail.mrkopt.com resolves to one IP number: 160.16.205.133.

Other host names, for instance hotel-fuji.net, www.dainihon-kateiongaku.co.jp, mail.machine-c.com, www.mimura-inc.co.jp and gk7.net share IP numbers with mail.mrkopt.com.