`100.smartstudy.co.kr`

DNSSEC	⚠️ Not signed
A	3.164.22.20^{🇺🇸 Amazon3.164.20.0/22}
		PTR	`server-3-164-22-20.gru3.r.cloudfront.net`
A	3.164.22.33^{🇺🇸 Amazon3.164.20.0/22}
A	3.164.22.38^{🇺🇸 Amazon3.164.20.0/22}
A	3.164.22.109^{🇺🇸 Amazon3.164.20.0/22}

`smartstudy.co.kr`

	DNSSEC	⚠️ Not signed
	A	3.164.6.10^{🇺🇸 Amazon3.164.4.0/22}
	A	3.164.6.11^{🇺🇸 Amazon3.164.4.0/22}
	A	3.164.6.22^{🇺🇸 Amazon3.164.4.0/22}
	A	3.164.6.85^{🇺🇸 Amazon3.164.4.0/22}
	NS	`ns-1346.awsdns-40.org` ⭐
	NS	`ns-1544.awsdns-01.co.uk`
	NS	`ns-478.awsdns-59.com`
	NS	`ns-681.awsdns-21.net`
	MX	`aspmx2.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`aspmx.l.google.com`⁽¹⁰⁾
	MX	`aspmx3.l.google.com`⁽¹⁰⁾
	TXT	`v=spf1 include:_spf.google.com ~all`
	SOA	`ns-1346.awsdns-40.org`awsdns-hostmaster@amazon.com serial=1

📈 Tranco rank: #132,355

Same first word

100.money

100.international

100.app

100.de

100.pt

100.ag

100.media

100.care

100.amsterdam

100.at

100.nu

100.ch

100.boutique

100.cl

100.info

100.golf

100.fr

100.net

100.s3.amazonaws.com

100.ua

100.eu

100.com.cn

100.business

100.se

100.com.ua

100.tours

100.la

100.land

100.co.tz

100.in

100.com.au

100.ph

100.show

100.tips

100.gs

100.gallery

100.zj.cn

100.lu

100.pl

100.io

100.cm

100.ir

100.serveftp.net

100.photos

100.ge

100.codes

100.in-addr.arpa

100.is

100.me

100.digital

100.today

100.chat

100.or.jp

100.team

100.ae

100.rs

100.hu

100.cn

100.be

100.ks.ua

100.photography

100.am

100.x0.com

100.energy

100.vc

100.co

100.bz

100.com.ec

100.tw

100.tf

100.co.za

100.hk

100.gdynia.pl

100.yt

100.us

100.no

100.ca

100.ne.jp

100.org.au

100.one

100.film

100.cz

100.ai

100.bet

100.black

100.zone

100.agency

100.co.uk

100.li

100.wiki

100.nyc

100.aig

100.network

100.lat

100.email

100.pe

100.tel

100.to

100.sumy.ua

100.guide

100.sk

100.vn

100.com.tw

100.dog

100.game

100.com.vn

100.win

100.works

100.gg

100.london

100.dev

100.cc

100.pictures

100.bg

100.su

100.com

100.fi

100.run

100.jp

100.ee

100.tools

100.githubusercontent.com

100.cards

100.org.il

100.im

100.exchange

100.vision

100.vg

100.city

100.nl

100.it

100.ru

100.sd

100.lv

100.kim

100.events

100.org

Similar names

010.org

001.lc

010.one

001.pt

001.pro

010.it

001.ne.jp

010.co

001.cc

010.hk

001.bar

001.bj

001.xyz

001.dev

010.cm

010.is

010.be

001.co.za

001.city

001.africa

010.cz

010.cc

001.s3.amazonaws.com

001.nu

001.it

010.com.tw

001.ph

001.sbs

001.am

001.kyoto

010.city

010.nl

010.net

001.online

001.st

001.bike

010.cn

010.tech

010.world

010.me

001.one

001.co.il

001.eu

001.domains

010.ca

001.de

001.lt

010.li

010.fr

010.ro

001.chat

001.hu

001.com.ua

010.jp

010.az

DNS History

12 records (4 active, 8 former)

○A108.158.121.2152026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-08 22:22:56
● 2026-04-11 15:47:44
● 2026-04-11 19:28:30
○ 2026-04-12 06:47:08

○A108.158.121.262026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-08 22:22:56
● 2026-04-11 15:47:44
● 2026-04-11 19:28:30
○ 2026-04-12 06:47:08

○A108.158.121.272026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-08 22:22:56
● 2026-04-11 15:47:44
● 2026-04-11 19:28:30
○ 2026-04-12 06:47:08

○A108.158.121.972026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-08 22:22:56
● 2026-04-11 15:47:44
● 2026-04-11 19:28:30
○ 2026-04-12 06:47:08

○A18.160.45.1172026-02-20 → 2026-03-27 · 4 obs

● 2026-02-20 11:08:46
● 2026-03-27 05:43:16
○ 2026-04-01 03:03:40
○ 2026-04-12 06:47:08

○A18.160.45.1422026-02-20 → 2026-03-27 · 4 obs

● 2026-02-20 11:08:46
● 2026-03-27 05:43:16
○ 2026-04-01 03:03:40
○ 2026-04-12 06:47:08

○A18.160.45.1542026-02-20 → 2026-03-27 · 4 obs

● 2026-02-20 11:08:46
● 2026-03-27 05:43:16
○ 2026-04-01 03:03:40
○ 2026-04-12 06:47:08

○A18.160.45.822026-02-20 → 2026-03-27 · 4 obs

● 2026-02-20 11:08:46
● 2026-03-27 05:43:16
○ 2026-04-01 03:03:40
○ 2026-04-12 06:47:08

●A3.164.22.1092026-04-01 → 2026-04-12 · 6 obs

○ 2026-03-27 05:43:16
● 2026-04-01 03:03:40
● 2026-04-08 22:22:56
○ 2026-04-11 15:47:44
○ 2026-04-11 19:28:30
● 2026-04-12 06:47:08

●A3.164.22.202026-04-01 → 2026-04-12 · 6 obs

○ 2026-03-27 05:43:16
● 2026-04-01 03:03:40
● 2026-04-08 22:22:56
○ 2026-04-11 15:47:44
○ 2026-04-11 19:28:30
● 2026-04-12 06:47:08

●A3.164.22.332026-04-01 → 2026-04-12 · 6 obs

○ 2026-03-27 05:43:16
● 2026-04-01 03:03:40
● 2026-04-08 22:22:56
○ 2026-04-11 15:47:44
○ 2026-04-11 19:28:30
● 2026-04-12 06:47:08

●A3.164.22.382026-04-01 → 2026-04-12 · 6 obs

○ 2026-03-27 05:43:16
● 2026-04-01 03:03:40
● 2026-04-08 22:22:56
○ 2026-04-11 15:47:44
○ 2026-04-11 19:28:30
● 2026-04-12 06:47:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kr	b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr...	-
smartstudy.co.kr	ns-1346.awsdns-40.org, ns-1544.awsdns-01.co.uk, ns-478.awsdns-59.com, ns-681.awsdns-21.net	-

✅ Authoritative Response

Server:205.251.197.66

NS records: ns-1346.awsdns-40.org, ns-1544.awsdns-01.co.uk, ns-478.awsdns-59.com, ns-681.awsdns-21.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for smartstudy.co.kr (unsigned zone)

⏱️ Timing

Total: 944ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.164.22.20, 3.164.22.33...`

Analysis

IP Addresses

100.smartstudy.co.kr resolves to four IPs: 3.164.22.20, 3.164.22.33, 3.164.22.38 and 3.164.22.109.

Other host names, for instance rashidmansoor.com, d19rwafe7w9ltb.cloudfront.net, d1yi142opeangt.cloudfront.net, d1e62(0x733378)7fxxpy.cloudfront.net and vec6jrsf.cdn.jwplayer.com share IP numbers with 100.smartstudy.co.kr.

100.smartstudy.co.kr - robtex.com