mail.cen-21.com - robtex.com

mail.cen-21.com

DNSSEC⚠️ Not signed
A133.167.0.68🇯🇵 SAKURA-B133.167.0.0/24 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka-shi, Osaka 530-0011, Japan
PTRwww50058.sakura.ne.jp
NSmaster.dns.ne.jp ⭐
A210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRmaster.dns.ne.jp
NSns1.dns.ne.jp ⚠️ Not in parent delegation
A61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRns1.dns.ne.jp
NSns2.dns.ne.jp ⚠️ Not in parent delegation
A133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
PTRns2.dns.ne.jp
MXmail.cen-21.com ⭐
A133.167.0.68🇯🇵 SAKURA-B133.167.0.0/24 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka-shi, Osaka 530-0011, Japan
PTRwww50058.sakura.ne.jp
SOAmaster.dns.ne.jptech@sakura.ad.jp 2021-07-01 #16

cen-21.com

DNSSEC⚠️ Not signed
A153.125.228.9🇯🇵 SAKURA-B153.125.224.0/20 (TOKYO) SAKURA Internet // EAST 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
MXmail.cen-21.com ⭐
TXTv=spf1 include:spf.macly.jp include:spfsakura.macly.jp include:spfblue.macly....
SOAmaster.dns.ne.jptech@sakura.ad.jp 2025-12-07 #2
WOT: SAFE (62/100)
WOT: UNKNOWN (68/100)

MX for

cen-21.com
mail.cen-21.com

Same first word

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Similar names

almi.es
mila.ch
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🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
cen-21.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 cen-21.com (unsigned zone)

⏱️ Timing

Total: 3978ms | Queries: -

📄 Records

TypeCountSample Data
A1133.167.0.68
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1mail.cen-21.com (pri: 10)
SOA1master.dns.ne.jp tech.sakura.ad.jp

Analysis

Mail Server Role

mail.cen-21.com serves as the mail server for cen-21.com and mail.cen-21.com.

IP Addresses

mail.cen-21.com points to a single IP: 133.167.0.68.

Other host names, for instance mail.landplan.co.jp, mail.tomoe.ne.jp, mail.riseup-net.co.jp, mail.miraie.co.jp and yamaki.tv share IP numbers with mail.cen-21.com.

Name Servers

mail.cen-21.com is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

mail.cen-21.com at least partially shares its name servers with other domains, for instance hisagoya.info, e-ootori.sakura.ne.jp, se-saga.com, kachikachi.net and jrt.gr.jp.

These name servers are often used together with the name servers dns.sakura.ad.jp.

Host names with one IP number:

master.dns.ne.jp points to: 210.224.172.18.

ns1.dns.ne.jp points to: 61.211.236.1.

ns2.dns.ne.jp points to: 133.167.21.1.

Mail Servers

mail.cen-21.com is handled by a single mail server.

mail.cen-21.com shares the same mail server setup as other domains, for instance cen-21.com.

mail.cen-21.com points to IP number 133.167.0.68.