dht.co.jp - robtex.com

dht.co.jp

DNSSEC⚠️ Not signed
A133.167.90.91🇯🇵 SAKURA-C133.167.0.0/16 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
PTRdht.co.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
MXmail.dht.co.jp ⭐
A133.167.90.91🇯🇵 SAKURA-C133.167.0.0/16 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
PTRdht.co.jp
TXTv=spf1 +ip6:2403:3a00:202:1916:133:167:90:91 +ip4:133.167.90.91 include:mail....
TXTgoogle-site-verification=UDTNEQ_E9cWd1pCEda6ZAWs2S9WA6xhFT4am6uN2mGU
TXTgoogle-site-verification=wu7oOLb2FSdkBENSCFM93WyVCjcFhe7ghcTnf_32dE4
SOAmaster.dns.ne.jptech@sakura.ad.jp 2025-08-20 #1

co.jp

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

Same first word

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DNS History

11 records (5 active, 6 former)

20162017201820192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpns.kk-ca.netns2.kk-ca.netMXmail.dht.co.jpvmx0.mail-servers.orgvmx1.mail-servers.orgvmx2.mail-servers.orgA133.167.90.9161.115.234.20
●NSmaster.dns.ne.jp2026-04-11 → 2026-04-15 · 3 obs
○ 2017-05-17 17:21:58
● 2026-04-11 10:39:30
● 2026-04-15 02:43:36
○NSns.kk-ca.net2015-06-07 → 2017-05-17 · 4 obs
● 2015-06-07 04:19:00
● 2017-05-17 17:21:58
○ 2026-04-11 10:39:30
○ 2026-04-15 02:43:36
●NSns1.dns.ne.jp2026-04-11 → 2026-04-15 · 3 obs
○ 2017-05-17 17:21:58
● 2026-04-11 10:39:30
● 2026-04-15 02:43:36
●NSns2.dns.ne.jp2026-04-11 → 2026-04-15 · 3 obs
○ 2017-05-17 17:21:58
● 2026-04-11 10:39:30
● 2026-04-15 02:43:36
○NSns2.kk-ca.net2015-06-07 → 2017-05-17 · 4 obs
● 2015-06-07 04:19:00
● 2017-05-17 17:21:58
○ 2026-04-11 10:39:30
○ 2026-04-15 02:43:36
●MXmail.dht.co.jp2026-04-11 → 2026-04-15 · 3 obs
○ 2017-05-17 17:21:58
● 2026-04-11 10:39:30
● 2026-04-15 02:43:36
○MXvmx0.mail-servers.org2015-06-07 → 2017-05-17 · 4 obs
● 2015-06-07 04:19:00
● 2017-05-17 17:21:58
○ 2026-04-11 10:39:30
○ 2026-04-15 02:43:36
○MXvmx1.mail-servers.org2015-06-07 → 2017-05-17 · 4 obs
● 2015-06-07 04:19:00
● 2017-05-17 17:21:58
○ 2026-04-11 10:39:30
○ 2026-04-15 02:43:36
○MXvmx2.mail-servers.org2015-06-07 → 2017-05-17 · 4 obs
● 2015-06-07 04:19:00
● 2017-05-17 17:21:58
○ 2026-04-11 10:39:30
○ 2026-04-15 02:43:36
●A133.167.90.912026-04-11 → 2026-04-15 · 3 obs
○ 2017-05-17 17:21:58
● 2026-04-11 10:39:30
● 2026-04-15 02:43:36
○A61.115.234.202015-06-07 → 2017-05-17 · 4 obs
● 2015-06-07 04:19:00
● 2017-05-17 17:21:58
○ 2026-04-11 10:39:30
○ 2026-04-15 02:43:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...15 records
dht.co.jpns2.dns.ne.jp, ns1.dns.ne.jp2 records

✅ Authoritative Response

Server:61.211.236.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 844ms | Queries: -

📄 Records

TypeCountSample Data
A1133.167.90.91
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1mail.dht.co.jp (pri: 10)
TXT3v=spf1 +ip6:2403:3a00:202:1916:133:167:9, google-site-verification=UDTNEQ_E9cWd1pC...
SOA1master.dns.ne.jp tech.sakura.ad.jp

📌 Glue Records Collected

Total: 17

In-bailiwick: 15 (a.dns.jp, b.dns.jp, c.dns.jp...)

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

Analysis

IP Addresses

dht.co.jp resolves to a single IP address: 133.167.90.91.

Name Servers

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

dht.co.jp at least partially shares name servers with other domains, including shama-net.com, p-ad.com, nikonikotakagi.com, on-foot.jp and take-d.org.

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

Hostnames 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

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

mail.dht.co.jp points to a single IP: 133.167.90.91.