`study.cat`

DNSSEC	⚠️ Not signed
A	67.199.248.12^{🇺🇸 Google67.199.248.0/24 BITLY/GCP}
		PTR	`cname.bitly.com`
A	67.199.248.13^{🇺🇸 Google67.199.248.0/24 BITLY/GCP}
NS	`ns-1264.awsdns-30.org` ⭐
		A	2600:9000:5304:f000::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1264.awsdns-30.org`
		A	205.251.196.240^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1264.awsdns-30.org`
NS	`ns-1983.awsdns-55.co.uk`
		A	2600:9000:5307:bf00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1983.awsdns-55.co.uk`
		A	205.251.199.191^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1983.awsdns-55.co.uk`
NS	`ns-53.awsdns-06.com`
		A	2600:9000:5300:3500::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-53.awsdns-06.com`
		A	205.251.192.53^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-53.awsdns-06.com`
NS	`ns-743.awsdns-28.net`
		A	2600:9000:5302:e700::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-743.awsdns-28.net`
		A	205.251.194.231^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-743.awsdns-28.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f27.1e100.net`
		A	64.233.180.26^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f26.1e100.net`
			PTR	`pe-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
MX	`yrqqjh2enscdatcgkrep4zygwnjs2asnch7pljjru54sax6fdkcq.mx-verification.google.com`⁽¹⁵⁾
TXT	`google-site-verification=tQpod2wSjnZj7-zT7AWKt5D7x5arUVMZsusjp2K572A`
TXT	`v=spf1 include:_spf.mlsend.com include:mail.zendesk.com include:_spf.google.c...`
SOA	`ns-1264.awsdns-30.org`awsdns-hostmaster@amazon.com serial=1

`cat`

	DNSSEC	🔒 Signed (DS record present)
	NS	`anyc1.irondns.net` ⭐
	NS	`cat.ns.nic.es`
	NS	`cat.pch.net`
	NS	`nsc.nic.de`
	NS	`switch.nic.cat`
	SOA	`anyc1.irondns.net`dnsmaster@corenic.org serial=2607031431

Subdomains

dev.study.cat

Same first word

study.co

study.biz

study.bible

study.ne.jp

study.blue

study.express

study.be

study.co.uk

study.today

study.ne.kr

study.no

study.new

study.bet

study.life

study.training

study.boats

study.lv

study.su

study.academy

study.mobi

study.group

study.ly

study.uz

study.cz

study.skin

study.center

study.cheap

study.to

study.co.il

study.by

study.com.mx

study.gr

study.at

study.mn

study.kiev.ua

study.support

study.fi

study.credit

study.church

study.land

study.world

study.es

study.ir

study.edu.ge

study.net

study.team

study.cafe

study.vic.gov.au

study.com.pk

study.sk

study.monash

study.ca

study.ac.id

study.help

study.tj

study.technology

study.beauty

study.tube

study.guide

study.id

study.ltd

study.black

study.cat

study.us

study.org

study.directory

study.nl

study.dk

study.tours

study.kz

study.com.pl

study.de

study.edu.vn

study.uk.net

study.company

study.lu

study.place

study.ua

study.my

study.gov.pl

study.foundation

study.eu

study.agency

study.ie

study.com

study.mba

study.engineering

study.se

study.go.kr

study.computer

study.ru

study.loans

study.tools

study.matrix.jp

study.brussels

study.it

study.gr.jp

study.travel

study

study.mx

study.in.th

study.direct

study.zone

study.jp

study.co.jp

study.cm

study.kg

study.tw

study.run

Similar names

dusty.tv

dusty.ru

dyust.io

dusty.nl

dusty.dk

dusty.work

ystud.com

dusty.com

tydus.com

sutdy.com

dusty.ee

dusty.us

dstuy.com

dusty.co.uk

dusty.it

dusty.kasserver.com

dusty.com.br

tudsy.com

tydus.org

dusty.tech

yduts.com

stydu.ru

tudsy.online

tydus.it

dusty.dyndns.org

dusty.ca

dusty.co

sduty.com

tydus.net

duyts.nl

dusty.org

dusty.codes

dutys.com

duyts.amsterdam

dusty.se

dusty.cz

dusty.readthedocs.io

dusty.gr

dusty.no

dusty.page

stduy.com

dusty.wtf

DNS History

12 records (12 active, 0 former)

●NSns-1264.awsdns-30.org2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●NSns-1983.awsdns-55.co.uk2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●NSns-53.awsdns-06.com2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●NSns-743.awsdns-28.net2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●MXalt1.aspmx.l.google.com2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●MXalt2.aspmx.l.google.com2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●MXalt3.aspmx.l.google.com2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●MXalt4.aspmx.l.google.com2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●MXaspmx.l.google.com2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●MXyrqqjh2enscdatcgkrep4zygwnjs2asnch7pljjru54sax6fdkcq.mx-verification.google.com2026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●A67.199.248.122026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

●A67.199.248.132026-03-08 → 2026-07-03 · 2 obs

● 2026-03-08 08:50:38
● 2026-07-03 14:45:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
study.cat	ns-1983.awsdns-55.co.uk, ns-53.awsdns-06.com, ns-743.awsdns-28.net, ns-1264.awsdns-30.org	-

✅ Authoritative Response

Server:205.251.194.231

NS records: ns-1983.awsdns-55.co.uk, ns-53.awsdns-06.com, ns-743.awsdns-28.net, ns-1264.awsdns-30.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for study.cat (unsigned zone)

⏱️ Timing

Total: 191ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`67.199.248.13, 67.199.248.12`
NS	4	`ns-1264.awsdns-30.org, ns-1983.awsdns-55.co.uk...`
MX	6	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=tQpod2wSjnZj7-z, v=spf1 include:_spf.mlsend.com include:m`
SOA	1	`ns-1264.awsdns-30.org awsdns-hostmaster.`

Analysis

Hierarchy

study.cat is a parent domain of dev.study.cat.

IP Addresses

study.cat resolves to the IP addresses 67.199.248.12 and 67.199.248.13

mcohn.me, cbs.mw, links.optisigns.com plus two other host names have IP numbers in common with study.cat.

Name Servers

Four name servers handle the delegation for study.cat: ns-53.awsdns-06.com, ns-743.awsdns-28.net, ns-1264.awsdns-30.org and ns-1983.awsdns-55.co.uk.

study.cat shares at least some of its name servers with other domains, including evenbits.de, abcargent.com, simedarby.com.my and two others.

The host names ns-53.awsdns-06.com, ns-743.awsdns-28.net, ns-1264.awsdns-30.org and ns-1983.awsdns-55.co.uk each resolve to two IP addresses: ns-53.awsdns-06.com resolves to 205.251.192.53 and 2600:9000:5300:3500::1; ns-743.awsdns-28.net resolves to 205.251.194.231 and 2600:9000:5302:e700::1; ns-1264.awsdns-30.org resolves to 205.251.196.240 and 2600:9000:5304:f000::1; ns-1983.awsdns-55.co.uk resolves to 205.251.199.191 and 2600:9000:5307:bf00::1.

Mail Servers

study.cat is handled by 6 mail servers: aspmx.l.google.com, yrqqjh2enscdatcgkrep4zygwnjs2asnch7pljjru54sax6fdkcq.mx-verification.google.com, alt1.aspmx.l.google.com and 3 other.

At least some of the mail servers used by study.cat are shared with other domains: ns500759.ns500698.ns500758.ns500758.ns500735.ns500735.ns500736.ns500698.ns500698.ns500576.ns500698.ns500576.ns500576.trackreceptor.com, ns500731.ns500671.ns500742.ns500754.ns500742.ns500731.ns500671.ns500688.ns500671.ns500649.ns500688.ns500291.ns500291.ns500153.tenderladiesbz.com, ns500731.ns500742.ns500754.ns500731.ns500704.ns500705.ns500688.ns500704.ns500705.ns500649.ns500666.tenderladiesbz.com and two others among them.

It is common to find these mail servers paired with the mail servers alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com, as well as two others.

Host names pointing to two IP addresses:

aspmx.l.google.com maps to two IP addresses — 64.233.180.26 and 2607:f8b0:4004:c1b::1b.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com maps to two IP addresses — 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com maps to two IP addresses — 172.253.157.26 and 2a00:1450:400c:c23::1a.