at-school.jp - robtex.com

at-school.jp

DNSSEC⚠️ Not signed
A219.94.199.88🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTR88.199.94.219.static.www408b.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
MXat-school.jp ⭐
A219.94.199.88🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTR88.199.94.219.static.www408b.sakura.ne.jp
TXTv=spf1 a:www408b.sakura.ne.jp mx ~all
SOAmaster.dns.ne.jptech@sakura.ad.jp 2026-03-23 #1

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=1774943103

MX for

at-school.jp

Subdomains

mail.at-school.jp

Same first word

at-school.com
at-school.ru
at-school.nl
at-school.jp

Similar names

ach-tools.com

DNS History

11 records (5 active, 6 former)

20162017201820192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpat-school.jpns.at-school.jpns1.at-school.jpns2.at-school.jpMXat-school.jpmail.at-school.jpA219.94.199.88153.127.244.162
○NSat-school.jp2015-06-24 → 2017-02-09 · 4 obs
● 2015-06-24 16:34:40
● 2017-02-09 07:20:42
○ 2026-03-31 08:04:16
○ 2026-03-31 08:04:18
●NSmaster.dns.ne.jp2026-03-31 → 2026-03-31 · 3 obs
○ 2017-02-09 07:20:42
● 2026-03-31 08:04:16
● 2026-03-31 08:04:18
○NSns.at-school.jp2015-06-24 → 2017-02-09 · 4 obs
● 2015-06-24 16:34:40
● 2017-02-09 07:20:42
○ 2026-03-31 08:04:16
○ 2026-03-31 08:04:18
○NSns1.at-school.jp2015-06-24 → 2017-02-09 · 4 obs
● 2015-06-24 16:34:40
● 2017-02-09 07:20:42
○ 2026-03-31 08:04:16
○ 2026-03-31 08:04:18
●NSns1.dns.ne.jp2026-03-31 → 2026-03-31 · 3 obs
○ 2017-02-09 07:20:42
● 2026-03-31 08:04:16
● 2026-03-31 08:04:18
○NSns2.at-school.jp2015-06-24 → 2017-02-09 · 4 obs
● 2015-06-24 16:34:40
● 2017-02-09 07:20:42
○ 2026-03-31 08:04:16
○ 2026-03-31 08:04:18
●NSns2.dns.ne.jp2026-03-31 → 2026-03-31 · 3 obs
○ 2017-02-09 07:20:42
● 2026-03-31 08:04:16
● 2026-03-31 08:04:18
●MXat-school.jp2026-03-31 → 2026-03-31 · 3 obs
○ 2017-02-09 07:20:42
● 2026-03-31 08:04:16
● 2026-03-31 08:04:18
○MXmail.at-school.jp2015-06-24 → 2017-02-09 · 4 obs
● 2015-06-24 16:34:40
● 2017-02-09 07:20:42
○ 2026-03-31 08:04:16
○ 2026-03-31 08:04:18
○A153.127.244.1622015-06-24 → 2017-02-09 · 4 obs
● 2015-06-24 16:34:40
● 2017-02-09 07:20:42
○ 2026-03-31 08:04:16
○ 2026-03-31 08:04:18
●A219.94.199.882026-03-31 → 2026-03-31 · 3 obs
○ 2017-02-09 07:20:42
● 2026-03-31 08:04:16
● 2026-03-31 08:04:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpf.dns.jp, a.dns.jp, b.dns.jp, g.dns.jp...-
at-school.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 at-school.jp (unsigned zone)

⏱️ Timing

Total: 868ms | Queries: -

📄 Records

TypeCountSample Data
A1219.94.199.88
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1at-school.jp (pri: 10)
TXT1v=spf1 a:www408b.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

Hierarchy

at-school.jp is the parent of mail.at-school.jp.

Mail Server Role

For at-school.jp, the mail server is at-school.jp.

IP Addresses

at-school.jp resolves to one IP number: 219.94.199.88.

Other host names such as 88.199.94.219.static.www408b.sakura.ne.jp and atschool.site share IP numbers with at-school.jp.

Name Servers

at-school.jp is delegated to three name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

at-school.jp at least partially shares name servers with other domains, for instance atdas.com, wedding-alfine.com, iiiim.com, keitai-kaitori.net and sosei.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

at-school.jp is served by a single mail server, at-school.jp.

at-school.jp resolves to IP 219.94.199.88.