🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`flex.engineering`

DNSSEC	⚠️ Not signed
A	49.212.168.205^{🇯🇵 SAKURA-A49.212.168.0/24 (ISHIKARI) SAKURA Internet // HOKKAIDO JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka-shi, Osaka 530-0011, Japan}
		PTR	`205.168.212.49.static.www4077m.sakura.ne.jp`
NS	`master.dns.ne.jp` ⭐
		A	210.224.172.18^{🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`master.dns.ne.jp`
NS	`ns1.dns.ne.jp`
		A	61.211.236.1^{🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`ns1.dns.ne.jp`
NS	`ns2.dns.ne.jp`
		A	133.167.21.1^{🇯🇵 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}
			PTR	`ns2.dns.ne.jp`
MX	`flex.engineering` ⭐
		A	49.212.168.205^{🇯🇵 SAKURA-A49.212.168.0/24 (ISHIKARI) SAKURA Internet // HOKKAIDO JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka-shi, Osaka 530-0011, Japan}
			PTR	`205.168.212.49.static.www4077m.sakura.ne.jp`
TXT	`v=spf1 a:www4077m.sakura.ne.jp mx ~all`
SOA	`master.dns.ne.jp`tech@sakura.ad.jp 2025-01-08 #1

`engineering`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.engineering` ⭐
	NS	`v0n1.nic.engineering`
	NS	`v0n2.nic.engineering`
	NS	`v0n3.nic.engineering`
	NS	`v2n0.nic.engineering`
	NS	`v2n1.nic.engineering`
	SOA	`v0n0.nic.engineering`hostmaster@donuts.email serial=1790153827

MX for

flex.engineering

Same first word

flex.blue

flex.com.ph

flex.red

flex.chat

flex.is

flex.ws

flex.tours

flex.ac

flex.com.my

flex.capital

flex.group

flex.io

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flex.ms

flex.money

flex.mt

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flex.in.net

flex.center

flex.gg

flex.shoes

flex.com.vn

flex.cl

flex.sy

flex.cy

flex.ch

flex.engineer

flex.now

flex.uk.net

flex.ca

flex.dk

flex.at

flex.condos

flex.no

flex.as

flex.cz

flex.ind.br

flex.farm

flex.in.th

flex.ie

flex.etc.br

flex.marketing

flex.moe

flex.pro

flex.co.uk

flex.dev

flex.pt

flex.graphics

flex.org.cn

flex.ink

flex.systems

flex.box

flex.hamburg

flex.international

flex.org.in

flex.care

flex.construction

flex.bi

flex.solutions

flex.uk

flex.games

flex.team

flex.shop

flex.bz.it

flex.consulting

flex.amsterdam

flex.physio

flex.enterprises

flex.rs

flex.ru.com

flex.works

flex.archi

flex.deals

flex.energy

flex.house

flex.app.br

flex.tokyo

flex.expert

flex.la

flex.com.pk

flex.cc

flex.studio

flex.si

flex.com.ag

flex.eu

flex.net

flex.media

flex.directory

flex.dental

flex.bet

flex.software

flex.ee

flex.net.ph

flex.lawyer

flex.black

flex.services

flex.network

flex.gold

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flex.web.id

felx.im

flex.tools

flex.top

flex.amazon

flex.fun

elfx.cn

flex.net.ua

flex.workers.dev

lxfe.pages.dev

felx.co

xelf.com.cn

flex.church

felx.hu

xfel.eu.org

flex.ae

flex.cool

flex.de

flex.com.hk

flex.business

flex.lgbt

flex.trade

xfel.com.br

xelf.io

efxl.com

lfex.com.br

flex.com.au

xelf.info

flex.gay

flex.nl

flex.okinawa

lfex.xyz

flex.com.tr

flex.in.ua

flex.berlin

lefx.cn

xfel.jp

flex.run

lefx.de

xlef.de

flex.it

flex.gd

flex.jp

flex.ge

flex.forex

flex.cash

felx.net

flex.sch.ng

flex.press

felx.dev

flex.pl

flex.tw

flex.com.ve

flex.healthcare

flex.swiss

lfex.com

flex.edu.pl

flex.cn

efxl.cn

flex.auction

flex.hockey

flex.co.nz

felx.com.pl

flex.cloudns.pro

flex.vg

xelf.tech

flex.bm

flex.com.br

flex.engineering

elfx.ca

flex.myds.me

flex.al

flex.restaurant

flex.agency

exlf.cn

flex.equipment

xlfe.com.cn

felx.ru

felx.org

xfle.app

xfel.pages.dev

lfex.org.ph

elfx.de

lxef.com

Previous names

Next names

DNS History

5 records (5 active, 0 former)

●NSmaster.dns.ne.jp2026-09-12 → 2026-09-23 · 2 obs

● 2026-09-12 15:20:46
● 2026-09-23 09:28:30

●NSns1.dns.ne.jp2026-09-12 → 2026-09-23 · 2 obs

● 2026-09-12 15:20:46
● 2026-09-23 09:28:30

●NSns2.dns.ne.jp2026-09-12 → 2026-09-23 · 2 obs

● 2026-09-12 15:20:46
● 2026-09-23 09:28:30

●MXflex.engineering2026-09-12 → 2026-09-23 · 2 obs

● 2026-09-12 15:20:46
● 2026-09-23 09:28:30

●A49.212.168.2052026-09-12 → 2026-09-23 · 2 obs

● 2026-09-12 15:20:46
● 2026-09-23 09:28:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
engineering	v0n0.nic.engineering, v0n1.nic.engineering, v0n2.nic.engineering, v0n3.nic.engineering...	12 records
flex.engineering	ns2.dns.ne.jp, ns1.dns.ne.jp	-

✅ Authoritative Response

Server:133.167.21.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flex.engineering (unsigned zone)

⏱️ Timing

Total: 1760ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`49.212.168.205`
NS	2	`ns1.dns.ne.jp, ns2.dns.ne.jp`
MX	1	`flex.engineering (pri: 10)`
TXT	1	`v=spf1 a:www4077m.sakura.ne.jp mx ~all`
SOA	1	`master.dns.ne.jp tech.sakura.ad.jp`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.engineering, v0n1.nic.engineering, v0n2.nic.engineering...)

Analysis

Mail Server Role

flex.engineering serves as a mail server for flex.engineering.

IP Addresses

flex.engineering has exactly one IP address — 49.212.168.205.

storagedirect.jp, cmsinc.co.jp, storagescience.jp plus two other host names have IP numbers in common with flex.engineering.

Name Servers

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

The name servers of flex.engineering overlap at least partially with those of other domains — among them kuki-kiyoku.com, tealsnake95.sakura.ne.jp, kyoto-afc.jp and two more.

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

flex.engineering uses exactly one mail server, which is flex.engineering.

flex.engineering directs to just one IP number, 49.212.168.205.

flex.engineering - robtex.com