st.act21.co.jp - robtex.com

st.act21.co.jp

DNSSEC⚠️ Not signed
A59.106.83.8🇯🇵 SAKURA-B59.106.0.0/17 (7-0/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-14 Minami Honmachi, Chuo-ku, Osaka 541-0054, Japan

act21.co.jp

DNSSEC⚠️ Not signed
A59.106.165.212🇯🇵 SAKURA-B59.106.128.0/18 (7-128/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-14 Minami Honmachi, Chuo-ku, Osaka 541-0054, Japan
NSsv1.act21.co.jp ⭐
NSns2.act21.co.jp
MXst.act21.co.jp ⭐
MXsv1.act21.co.jp(30)
TXTv=spf1 a:act21.co.jp ~all
TXTMS=ms73145161
SOAsv1.act21.co.jpadmin@sv1.act21.co.jp 2026-07-02 #2

MX for

act21.co.jp

Same first word

st.co
st.co.nz
st.im
st.com
st.company
st.sk
st.edu.ge
st.mba
st.net.au
st.golf
st.sakura.ne.jp
st.com.uy
st.dev
st.com.au
st.co.kr
st.at
st.vg
st.no
st.al
st.luxe
st.inf.br
st.by
st.s3-website-us-east-1.amazonaws.com
st.sy
st.ws
st.net
st.org
st.gov.cn
st.uz
st.education
st.jpn.org
st.hn
st.hn.cn
st.si
st.net.tr
st.net.ua
st.ph
st.cn
st.is
st.inc
st.am
st.gd
st.com.br
st.biz
st.kg
st.nl
st.ro
st.mt.gov.br
st.nu
st.cz
st.net.br
st.hu
st.cyou
st.co.uk
st.uk.com
st.com.pl
st.nhk
st.city
st.ee
st.dating
st.tv
st.cl
st.ua
st
st.fyi
st.vc
st.cc
st.ag
st.de
st.sh
st.ma
st.dk
st.df.gov.br
st.kz
st.st
st.je
st.la
st.ac.kr
st.ck.ua
st.digital
st.codes
st.art.br
st.com.py
st.fr
st.uy
st.lv
st.news
st.ac.th
st.rs
st.com.tm
st.io
st.tc
st.ar.it
st.cm
st.be
st.info
st.com.vn
st.su
st.gov.my
st.com.sg

Similar names

ts.net.tw
ts.su
ts.com.tw
ts.hs.kr
ts.com.tr
ts.cc
ts.is
ts.io
ts.de
ts.cash
ts.co.id
ts.ru
ts.hk
ts.nl
ts.gov.mz
ts.com.my
ts.ind.br
ts.im
ts.dev
ts.by
ts.tel
ts.com
ts.wpmudev.host
ts.rs
ts.la
ts.pl
ts.org
ts.dk
ts.co
ts.pe
ts.org.ua
ts.finance
ts.lt
ts.my
ts.mk
ts.sv
ts.parts
ts.se
ts.al
ts.es
ts.sp.gov.br
ts.co.kr
ts.blogspot.com
ts.com.ua
ts.cz
ts.com.ps
ts.world
ts.szczecin.pl
ts.ai
ts.today
st.ru
st.com.cn
st.in.ua
st.s3.amazonaws.com
ts.gov.lv
ts.ph
ts.or.at

DNS History

1 record (1 active, 0 former)

A59.106.83.8
●A59.106.83.82026-04-02 → 2026-07-15 · 2 obs
● 2026-04-02 13:16:48
● 2026-07-15 22:52:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
act21.co.jpns2.act21.co.jp, sv1.act21.co.jp2 records

✅ Authoritative Response

Server:59.106.165.213

NS records: ns2.act21.co.jp, sv1.act21.co.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for act21.co.jp (unsigned zone)

⏱️ Timing

Total: 938ms | Queries: -

📄 Records

TypeCountSample Data
A159.106.83.8

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (ns2.act21.co.jp, sv1.act21.co.jp)

Analysis

Mail Server Role

act21.co.jp uses st.act21.co.jp as a mail server.

sv1.act21.co.jp and st.act21.co.jp tend to appear jointly as mail servers.

IP Addresses

st.act21.co.jp resolves to one IP address: 59.106.83.8.

st.minayoshi.co.jp, st.studiopfactory.net, st.oxybot.com and two other host names share IP numbers with st.act21.co.jp.