smtp.gmail21.com - dns.ninja

smtp.gmail21.com

DNSSEC⚠️ Not signed
A133.242.191.43🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
PTRik1-132-72789.vs.sakura.ne.jp

gmail21.com

DNSSEC⚠️ Not signed
A133.242.191.43🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
NS01.dnsv.jp ⭐
NS02.dnsv.jp
NS03.dnsv.jp
NS04.dnsv.jp
MXsmtp.gmail21.com ⭐
TXTgoogle-site-verification=Jbe838TNan8KR3Z_KfYpYjPhJzpkZ8KMrceiyJDAoXA
TXTv=spf1 mx ip4:133.242.191.43 -all
SOA01.dnsv.jphostmaster@dnsv.jp serial=1684120633

MX for

gmail21.com

Same first word

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DNS History

2 records (1 active, 1 former)

201820192020202120222023202420252026A133.242.191.43157.7.143.45
●A133.242.191.432026-03-18 → 2026-08-02 · 3 obs
○ 2017-10-05 04:44:48
● 2026-03-18 21:19:28
● 2026-08-02 13:35:58
○A157.7.143.452017-10-05 → 2017-10-05 · 3 obs
● 2017-10-05 04:44:48
○ 2026-03-18 21:19:28
○ 2026-08-02 13:35:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
gmail21.com01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp-

✅ Authoritative Response

Server:157.7.34.53

NS records: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gmail21.com (unsigned zone)

⏱️ Timing

Total: 1033ms | Queries: -

📄 Records

TypeCountSample Data
A1133.242.191.43

Analysis

Mail Server Role

smtp.gmail21.com is a mail server for gmail21.com.

IP Addresses

smtp.gmail21.com directs to one IP number, which is 133.242.191.43.

Among the host names that share IP numbers with smtp.gmail21.com are webmail-jp.com, smtp.webmail-jp.com, ik1-132-72789.vs.sakura.ne.jp and two others.