sprex.co.jp - robtex.com

sprex.co.jp

DNSSEC⚠️ Not signed
A49.212.117.100🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTR100.117.212.49.static.www3115.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
MXsprex.co.jp ⭐
A49.212.117.100🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTR100.117.212.49.static.www3115.sakura.ne.jp
TXTv=spf1 a:www3115.sakura.ne.jp mx ~all
SOAmaster.dns.ne.jptech@sakura.ad.jp 2022-09-26 #12

co.jp

DNSSEC⚠️ Not signed
TXTco.jp.
WOT: SAFE (58/100)

MX for

sprex.co.jp

Same first word

sprex.com.br
sprex.net
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sprex.biz
sprex.co.jp

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DNS History

11 records (5 active, 6 former)

2020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpns4.cpi.ad.jpns5.cpi.ad.jpMXsprex.co.jpvlmx20.secure.ne.jpvlmx21.secure.ne.jpvlmx22.secure.ne.jpA49.212.117.100158.199.184.77
●NSmaster.dns.ne.jp2026-04-10 → 2026-04-12 · 3 obs
○ 2019-12-13 14:10:58
● 2026-04-10 14:17:56
● 2026-04-12 06:19:20
●NSns1.dns.ne.jp2026-04-10 → 2026-04-12 · 3 obs
○ 2019-12-13 14:10:58
● 2026-04-10 14:17:56
● 2026-04-12 06:19:20
●NSns2.dns.ne.jp2026-04-10 → 2026-04-12 · 3 obs
○ 2019-12-13 14:10:58
● 2026-04-10 14:17:56
● 2026-04-12 06:19:20
○NSns4.cpi.ad.jp2019-12-13 → 2019-12-13 · 3 obs
● 2019-12-13 14:10:58
○ 2026-04-10 14:17:56
○ 2026-04-12 06:19:20
○NSns5.cpi.ad.jp2019-12-13 → 2019-12-13 · 3 obs
● 2019-12-13 14:10:58
○ 2026-04-10 14:17:56
○ 2026-04-12 06:19:20
●MXsprex.co.jp2026-04-10 → 2026-04-12 · 3 obs
○ 2019-12-13 14:10:58
● 2026-04-10 14:17:56
● 2026-04-12 06:19:20
○MXvlmx20.secure.ne.jp2019-12-13 → 2019-12-13 · 3 obs
● 2019-12-13 14:10:58
○ 2026-04-10 14:17:56
○ 2026-04-12 06:19:20
○MXvlmx21.secure.ne.jp2019-12-13 → 2019-12-13 · 3 obs
● 2019-12-13 14:10:58
○ 2026-04-10 14:17:56
○ 2026-04-12 06:19:20
○MXvlmx22.secure.ne.jp2019-12-13 → 2019-12-13 · 3 obs
● 2019-12-13 14:10:58
○ 2026-04-10 14:17:56
○ 2026-04-12 06:19:20
○A158.199.184.772019-12-13 → 2019-12-13 · 3 obs
● 2019-12-13 14:10:58
○ 2026-04-10 14:17:56
○ 2026-04-12 06:19:20
●A49.212.117.1002026-04-10 → 2026-04-12 · 3 obs
○ 2019-12-13 14:10:58
● 2026-04-10 14:17:56
● 2026-04-12 06:19:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
sprex.co.jpns2.dns.ne.jp, ns1.dns.ne.jp2 records

✅ Authoritative Response

Server:133.167.21.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sprex.co.jp (unsigned zone)

⏱️ Timing

Total: 884ms | Queries: -

📄 Records

TypeCountSample Data
A149.212.117.100
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1sprex.co.jp (pri: 10)
TXT1v=spf1 a:www3115.sakura.ne.jp mx ~all
SOA1master.dns.ne.jp tech.sakura.ad.jp

📌 Glue Records Collected

Total: 2

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

Analysis

Mail Server Role

sprex.co.jp serves as the mail server for sprex.co.jp.

IP Addresses

sprex.co.jp points to IP number: 49.212.117.100.

Other host names for instance cs-voice.net, 100.117.212.49.static.www3115.sakura.ne.jp, ohtaparts.com and haishaou-mie.com share IP numbers with sprex.co.jp.

Name Servers

sprex.co.jp is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

sprex.co.jp at least partially shares name servers with other domains, for instance (0x68656e746169).jpn.org, tm-iwaki.com, timeseeds.jp, socialpsychology.jp and ksj-co.com.

these name servers are often used in conjunction with the name servers dns.sakura.ad.jp.

Host names with a single IP:

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

sprex.co.jp is handled by a single mail server, sprex.co.jp.

sprex.co.jp points to a single IP: 49.212.117.100.