mail.jca.apc.org - robtex.com

mail.jca.apc.org

DNSSEC⚠️ Not signed
A2401:2500:102:1b01:133:242:181:238🇯🇵 SAKURA-A2401:2500::/32 (ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
PTRmail.jca.apc.org
A133.242.181.238🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
MXmx0.jca.ne.jp ⭐
A2401:2500:102:1b01:133:242:181:238🇯🇵 SAKURA-A2401:2500::/32 (ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
PTRmail.jca.apc.org
A133.242.181.238🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
PTRmail.jca.apc.org
TXTv=spf1 mx include:spf-01.jca.apc.org include:spf-02.jca.apc.org ~all

jca.apc.org

DNSSEC⚠️ Not signed
A2401:2500:204:1109:153:127:23:234🇯🇵 SAKURA-A2401:2500::/32 (ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan
A153.127.23.234🇯🇵 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
NSns01.jca.apc.org ⭐
NSns02.jca.apc.org
MXmx0.jca.ne.jp ⭐
MXmx1.jca.ne.jp(50)
TXTv=spf1 include:spf-01.jca.apc.org include:spf-02.jca.apc.org ~all
SOAns01.jca.apc.orghostmaster@jca.apc.org 2026-01-07 #0
WOT: SAFE (63/100)
WOT: SAFE (74/100)

PTR for

238.181.242.133.in-addr.arpa
8.3.2.0.1.8.1.0.2.4.2.0.3.3.1.0.1.0.b.1.2.0.1.0.0.0.5.2.1.0.4.2.ip6.arpa

Same first word

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DNS History

3 records (3 active, 0 former)

MXmx0.jca.ne.jpA133.242.181.2382401:2500:102:1b01:133:242:181:238
●MXmx0.jca.ne.jp2026-02-17 → 2026-05-12 · 2 obs
● 2026-02-17 09:28:02
● 2026-05-12 10:45:04
●A133.242.181.2382026-02-17 → 2026-05-12 · 2 obs
● 2026-02-17 09:28:02
● 2026-05-12 10:45:04
●A2401:2500:102:1b01:133:242:181:2382026-02-17 → 2026-05-12 · 2 obs
● 2026-02-17 09:28:02
● 2026-05-12 10:45:04

🔍 DNS Trace

Analysis

IP Addresses

mail.jca.apc.org points to two IPs: 2401:2500:102:1b01:133:242:181:238 and 133.242.181.238.

Other host names, such as mx0.jca.apc.org and mx0.jca.ne.jp, share IP numbers with mail.jca.apc.org.

Mail Servers

mail.jca.apc.org is handled by a single mail server, mx0.jca.ne.jp.

mail.jca.apc.org shares its mail server setup with other domains, including aworc.org, ns.jca.apc.org, poem.jp, ns1.jca.ne.jp and jca.ne.jp.

mail.jca.apc.org shares some mail servers with other domains, for instance poem.co.jp, mx0.jca.ne.jp, liveinpeace925.com and jca.apc.org.

these mail servers are commonly used alongside the mail servers mx1.jca.ne.jp.

mx0.jca.ne.jp points to two IPs: 2401:2500:102:1b01:133:242:181:238 and 133.242.181.238.