corefocus.jp - dns.ninja

corefocus.jp

DNSSEC⚠️ Not signed
A49.212.235.144🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww3404.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
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
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
MXcorefocus.jp ⭐
A49.212.235.144🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww3404.sakura.ne.jp
SOAmaster.dns.ne.jptech@sakura.ad.jp 2013-09-02 #12

jp

DNSSEC🔒 Signed (DS record present)
NSz.dns.jp ⭐
NSa.dns.jp
NSb.dns.jp
NSc.dns.jp
NSd.dns.jp
NSe.dns.jp
NSf.dns.jp
NSg.dns.jp
NSh.dns.jp
SOAz.dns.jproot@dns.jp serial=1785210303

MX for

corefocus.jp

Same first word

corefocus.co.uk
corefocus.ca
corefocus.co
corefocus.info
corefocus.net
corefocus.jp
corefocus.co.in
corefocus.com
corefocus.in

Similar names

creofocus.com
cfosource.com
refocusco.com
focuscore.us
focuscore.com
sourcecfo.com

DNS History

5 records (5 active, 0 former)

20162017201820192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpMXcorefocus.jpA49.212.235.144
●NSmaster.dns.ne.jp2015-06-14 → 2026-07-28 · 2 obs
● 2015-06-14 13:09:24
● 2026-07-28 04:03:16
●NSns1.dns.ne.jp2015-06-14 → 2026-07-28 · 2 obs
● 2015-06-14 13:09:24
● 2026-07-28 04:03:16
●NSns2.dns.ne.jp2015-06-14 → 2026-07-28 · 2 obs
● 2015-06-14 13:09:24
● 2026-07-28 04:03:16
●MXcorefocus.jp2015-06-14 → 2026-07-28 · 2 obs
● 2015-06-14 13:09:24
● 2026-07-28 04:03:16
●A49.212.235.1442015-06-14 → 2026-07-28 · 2 obs
● 2015-06-14 13:09:24
● 2026-07-28 04:03:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jph.dns.jp, g.dns.jp, a.dns.jp, e.dns.jp...-
corefocus.jpns1.dns.ne.jp, ns2.dns.ne.jp2 records

✅ Authoritative Response

Server:61.211.236.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for corefocus.jp (unsigned zone)

⏱️ Timing

Total: 663ms | Queries: -

📄 Records

TypeCountSample Data
A149.212.235.144
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1corefocus.jp (pri: 10)
SOA1master.dns.ne.jp tech.sakura.ad.jp

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.dns.ne.jp, ns2.dns.ne.jp)

Analysis

Mail Server Role

corefocus.jp handles its own mail, functioning as its own mail server.

IP Addresses

corefocus.jp resolves to just one IP address, 49.212.235.144.

Two other host names, along with lai-lai.net, umee.info and lp-inc.net, also share IP numbers with corefocus.jp.

Name Servers

Three name servers are authoritative for corefocus.jp: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

corefocus.jp has at least partial name server overlap with other domains, such as sayamatoru.com, ebinazion.com, republic.jpn.org and two others.

It is common to find these name servers paired with the name servers dns.sakura.ad.jp.

Three hostnames, one IP address apiece: master.dns.ne.jp resolves to 210.224.172.18, ns1.dns.ne.jp resolves to 61.211.236.1 and ns2.dns.ne.jp resolves to 133.167.21.1.

Mail Servers

corefocus.jp is served by just one mail server: corefocus.jp.

There is one IP number for corefocus.jp: 49.212.235.144.