mathcal.org - dns.ninja

mathcal.org

DNSSEC⚠️ Not signed
A219.94.163.20🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww1410.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
MXmathcal.org ⭐
A219.94.163.20🇯🇵 SAKURA-C219.94.128.0/17 (3/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww1410.sakura.ne.jp
TXTv=spf1 a:www1410.sakura.ne.jp mx ~all
SOAmaster.dns.ne.jptech@sakura.ad.jp 2016-03-21 #19

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1782204942

MX for

mathcal.org

Same first word

mathcal.net
mathcal.org
mathcal.com

Similar names

chataml.com
achtmal.de
matchla.com
malatch.com
almatch.com
tchalam.com
chatmal.com
latcham.com
clamath.de
latmach.com
mathlac.gr
almatch.blogspot.com
lamatch.com
altmach.com
latcham.org
machtal.com
matlach.de
matlach.com
calmhat.com
mathalc.com
lamchat.com
hmtalca.cl
latcham.co.uk
maltach.com
amathlc.com
talmach.com

DNS History

5 records (5 active, 0 former)

20192020202120222023202420252026NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpMXmathcal.orgA219.94.163.20
●NSmaster.dns.ne.jp2018-09-03 → 2026-06-23 · 2 obs
● 2018-09-03 01:27:06
● 2026-06-23 09:18:52
●NSns1.dns.ne.jp2018-09-03 → 2026-06-23 · 2 obs
● 2018-09-03 01:27:06
● 2026-06-23 09:18:52
●NSns2.dns.ne.jp2018-09-03 → 2026-06-23 · 2 obs
● 2018-09-03 01:27:06
● 2026-06-23 09:18:52
●MXmathcal.org2018-09-03 → 2026-06-23 · 2 obs
● 2018-09-03 01:27:06
● 2026-06-23 09:18:52
●A219.94.163.202018-09-03 → 2026-06-23 · 2 obs
● 2018-09-03 01:27:06
● 2026-06-23 09:18:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
mathcal.orgns1.dns.ne.jp, ns2.dns.ne.jp-

✅ Authoritative Response

Server:133.167.21.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathcal.org (unsigned zone)

⏱️ Timing

Total: 1658ms | Queries: -

📄 Records

TypeCountSample Data
A1219.94.163.20
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1mathcal.org (pri: 10)
TXT1v=spf1 a:www1410.sakura.ne.jp mx ~all
SOA1master.dns.ne.jp tech.sakura.ad.jp

Analysis

Mail Server Role

mathcal.org acts as its own mail server.

IP Addresses

mathcal.org points to a single IP number: 219.94.163.20.

Additional host names — 83931.jp, hp-making.c-i-h.net, naga-semi.com and two others — share IP numbers with mathcal.org.

Name Servers

The authoritative name servers for mathcal.org are master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp — three in total.

mathcal.org has at least partial name server overlap with other domains, such as nikkotaxi.com, wmsj.tokyo, mauve-system.co.jp and two others.

The hostnames master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp each resolve to a single IP: master.dns.ne.jp → 210.224.172.18, ns1.dns.ne.jp → 61.211.236.1, ns2.dns.ne.jp → 133.167.21.1.

Mail Servers

mathcal.org has a single mail server: mathcal.org itself.

mathcal.org directs to just one IP number, 219.94.163.20.