fl.ctrl.titech.ac.jp - robtex.com

fl.ctrl.titech.ac.jp

DNSSEC⚠️ Not signed
NSdns-o.net.titech.ac.jp ⭐
A131.112.125.54🇯🇵 TITECH131.112.0.0/16 Tokyo Institute of Technology
PTRdns-o.net.titech.ac.jp
NStitechdns-o.noc.titech.ac.jp ⚠️ Not in parent delegation
A2403:4440:40:997::125:57🇯🇵 TITECH2403:4440::/32 Tokyo Institute of Technology X-Keiro: as9367@noc.titech.ac.jp
A131.112.125.57🇯🇵 TITECH131.112.0.0/16 Tokyo Institute of Technology
PTRtitechdns-o.noc.titech.ac.jp
NStitechdns-s.noc.titech.ac.jp ⚠️ Not in parent delegation
A2403:4440:50:947::181:57🇯🇵 TITECH2403:4440::/32 Tokyo Institute of Technology X-Keiro: as9367@noc.titech.ac.jp
A131.112.181.57🇯🇵 TITECH131.112.0.0/16 Tokyo Institute of Technology
PTRtitechdns-s.noc.titech.ac.jp
MXfilter.nap.gsic.titech.ac.jp ⭐
A131.112.13.7🇯🇵 TITECH131.112.0.0/16 Tokyo Institute of Technology
SOAdns-o.net.titech.ac.jproot@dns-o.net.titech.ac.jp 2026-04-14 #1

ctrl.titech.ac.jp

DNSSEC⚠️ Not signed
NSdns-o.net.titech.ac.jp ⭐
NStitechdns-o.noc.titech.ac.jp
NStitechdns-s.noc.titech.ac.jp
MXfilter.nap.gsic.titech.ac.jp ⭐
TXTv=spf1 include:_spf.m.titech.ac.jp ~all
SOAdns-o.net.titech.ac.jproot@dns-o.net.titech.ac.jp 2026-02-06 #0
WOT: SAFE (64/100)
WOT: SAFE (72/100)

Same first word

fl.dk
fl.today
fl.com.pt
fl.ms
fl.ee
fl.net
fl.no
fl.by
fl.run
fl.academy
fl.cx
fl.com
fl.at
fl.readthedocs.io
fl.su
fl.ag
fl.asn.au
fl.net.au
fl.hk
fl.de
fl.sk
fl.gov
fl.ws
fl.co
fl.gd
fl.tv
fl.fo
fl.ma
fl.fr
fl.vc
fl.srv.br
fl.com.ru
fl.co.za
fl.si
fl.com.br
fl.ca
fl.gs
fl.nu
fl.priv.at
fl.im
fl.fyi
fl.kz
fl.ae
fl.ua
fl.accountants
fl.properties
fl.fi
fl.team
fl.org
fl.gg
fl.studio
fl.edu
fl.rentals
fl.ax
fl.finance
fl.lt
fl.be
fl.is
fl.ru
fl.vacations
fl.am
fl.uy
fl.pp.ru
fl.uk
fl.sg
fl.agency
fl.com.mx
fl.cz
fl.tj
fl.cr
fl.nl
fl.com.ua
fl.us.com
fl.click
fl.lv
fl.solar
fl.gov.cn
fl.ro
fl.city
fl.vg
fl.sa
fl.pl

Similar names

lf.cl
lf.com.pt
lf.church
lf.co
lf.zj.cn
lf.he.cn
lf.com
lf.gr
lf.by
lf.is
lf.no
lf.sx.cn
lf.io
lf.com.tr
lf.wtf
lf.edu.co
lf.pl
lf.rs
lf.school
lf.training
lf.org.cn
lf.la
lf.je
lf.com.au
lf.fr
lf.cn
lf.nu
lf.lv
lf.ca
lf.vc
lf.lc
lf.su
lf.energy
lf.fi
lf.net
lf.network
lf.com.ua
lf.cc
lf.ru
lf.dk
lf.ac
lf.be

DNS History

4 records (4 active, 0 former)

NSdns-o.net.titech.ac.jptitechdns-o.noc.titech.ac.jptitechdns-s.noc.titech.ac.jpMXfilter.nap.gsic.titech.ac.jp
●NSdns-o.net.titech.ac.jp2026-03-13 → 2026-07-15 · 2 obs
● 2026-03-13 03:05:20
● 2026-07-15 07:06:32
●NStitechdns-o.noc.titech.ac.jp2026-03-13 → 2026-07-15 · 2 obs
● 2026-03-13 03:05:20
● 2026-07-15 07:06:32
●NStitechdns-s.noc.titech.ac.jp2026-03-13 → 2026-07-15 · 2 obs
● 2026-03-13 03:05:20
● 2026-07-15 07:06:32
●MXfilter.nap.gsic.titech.ac.jp2026-03-13 → 2026-07-15 · 2 obs
● 2026-03-13 03:05:20
● 2026-07-15 07:06:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpe.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...-
titech.ac.jpns.fujisawa.wide.ad.jp, titechns2-o.noc.titech.ac.jp, titechns2-s.noc.titech.ac.jp2 records
ctrl.titech.ac.jptitechdns-o.noc.titech.ac.jp, titechdns-s.noc.titech.ac.jp4 records

✅ Authoritative Response

Server:131.112.181.57

NS records: titechdns-o.noc.titech.ac.jp, titechdns-s.noc.titech.ac.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for titech.ac.jp (unsigned zone)

⏱️ Timing

Total: 1243ms | Queries: -

📄 Records

TypeCountSample Data
NS2titechdns-o.noc.titech.ac.jp, titechdns-s.noc.titech.ac.jp
MX1filter.nap.gsic.titech.ac.jp (pri: 10)
SOA1dns-o.net.titech.ac.jp root.dns-o.net.ti

📌 Glue Records Collected

Total: 6

In-bailiwick: 2 (titechns2-o.noc.titech.ac.jp, titechns2-s.noc.titech.ac.jp)

Out-of-bailiwick: 4 (titechdns-s.noc.titech.ac.jp, titechdns-o.noc.titech.ac.jp, titechdns-s.noc.titech.ac.jp...)

Analysis

Name Servers

Three name servers are authoritative for fl.ctrl.titech.ac.jp: dns-o.net.titech.ac.jp, titechdns-o.noc.titech.ac.jp and titechdns-s.noc.titech.ac.jp.

At least some of fl.ctrl.titech.ac.jp's name servers are shared with other domains, for example alab.ip.titech.ac.jp, dis.titech.ac.jp, gakumu.titech.ac.jp and two more.

These name servers tend to co-occur with dns-o.noc.titech.ac.jp, dns-s.net.titech.ac.jp, ns2.noc.titech.ac.jp and 4 other name servers in the same DNS delegations.

Hostnames that resolve to two IP addresses:

titechdns-o.noc.titech.ac.jp maps to two IP addresses — 131.112.125.57 and 2403:4440:40:997::125:57.

titechdns-s.noc.titech.ac.jp maps to two IP addresses — 131.112.181.57 and 2403:4440:50:947::181:57.

Hosts with just one IP address:

dns-o.net.titech.ac.jp points to the IP address 131.112.125.54.

Mail Servers

Mail for fl.ctrl.titech.ac.jp is handled by a single mail server, filter.nap.gsic.titech.ac.jp.

fl.ctrl.titech.ac.jp uses an identical mail server configuration to several other domains — among them isct.ac.jp, vogue.c.titech.ac.jp, materia.titech.ac.jp and two more.

fl.ctrl.titech.ac.jp overlaps on mail servers with certain other domains, isl.titech.ac.jp among them.

There is one IP number for filter.nap.gsic.titech.ac.jp: 131.112.13.7.