studyguide.dev - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

studyguide.dev

DNSSEC⚠️ Not signed
A143.198.193.21🇸🇬 DIGITALOCEAN143.198.192.0/20 DigitalOcean
NSannalise.ns.cloudflare.com ⭐
A2606:4700:50::a29f:26ea🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRannalise.ns.cloudflare.com
A2803:f800:50::6ca2:c2ea🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRannalise.ns.cloudflare.com
A2a06:98c1:50::ac40:22ea🇺🇸 Cloudflare2a06:98c1:50::/45
PTRannalise.ns.cloudflare.com
A108.162.194.234🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRannalise.ns.cloudflare.com
A162.159.38.234Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRannalise.ns.cloudflare.com
A172.64.34.234🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRannalise.ns.cloudflare.com
NSdenver.ns.cloudflare.com
A2606:4700:58::a29f:2cc4🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdenver.ns.cloudflare.com
A2803:f800:50::6ca2:c3c4🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdenver.ns.cloudflare.com
A2a06:98c1:50::ac40:23c4🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdenver.ns.cloudflare.com
A108.162.195.196🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdenver.ns.cloudflare.com
A162.159.44.196Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdenver.ns.cloudflare.com
A172.64.35.196🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdenver.ns.cloudflare.com
MXmail.studyguide.dev ⭐
A61.28.233.9🇻🇳 CMC-461.28.233.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi
MXmx1.onemail.vn(5)
A103.216.116.14🇻🇳 VNPT-AS-VN103.216.116.0/22 INETSOFT-VN
PTRmx1.smtp-in.onemail.vn
MXmx2.onemail.vn(5)
A103.72.96.29🇻🇳 INETSOFT-AS-VN103.72.96.0/22 INETSOFT-VN
PTRmx2.smtp-in.onemail.vn
MXmx3.onemail.vn(5)
A103.56.162.10🇻🇳 VNPT-AS-VN103.56.160.0/22 INETSOFT-VN
PTRmx3.smtp-in.onemail.vn
TXTv=spf1 +mx +a +ip4:61.28.233.9 ~all
TXTv=spf1 include:_spf.onemail.vn ~all
TXTzalo-platform-site-verification=ODovUAJP2cH2zO5jmzq9EX_ZeYBpbNHwCpar
SOAannalise.ns.cloudflare.comdns@cloudflare.com serial=2413613955

dev

DNSSEC🔒 Signed (DS record present)
NSns-tld1.charlestonroadregistry.com ⭐
NSns-tld2.charlestonroadregistry.com
NSns-tld3.charlestonroadregistry.com
NSns-tld4.charlestonroadregistry.com
NSns-tld5.charlestonroadregistry.com
SOAns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=1
🔒 HSTS Preload (+subdomains)

Same first word

studyguide.space
studyguide.cfd
studyguide.education
studyguide.de
studyguide.gr
studyguide.net
studyguide.ru
studyguide.app
studyguide.website
studyguide.eu
studyguide.com
studyguide.co.uk
studyguide.uk
studyguide.dev
studyguide.com.au
studyguide.ca
studyguide.co.in
studyguide.study
studyguide.org
studyguide.ch
studyguide.at
studyguide.cn
studyguide.co
studyguide.us

Similar names

dudeistguy.com
guidestudy.info
guidestudy.com
guidestudy.us
guidestudy.tv

Previous names

studioxxi.dev
studioyellow.dev
studioz.dev
studiozeli.dev
studiozentrip.dev
studit.dev
studium.dev
studo.dev
studoq.dev
studwork.dev
studworks.dev
study-buddy.dev
studyapp.dev
studybuddy.dev
studycom.dev
studycraft.dev
studycyber.dev
studyforge.dev
studygroup.dev

Next names

studyhog.dev
studyhq.dev
studyhub.dev
studylyon.dev
studymatelearning.dev
studypal.dev
studyplace.dev
studyplan.dev
studyspace.dev
studystack.dev
studystream.dev
studysync.dev
studysyncweb.dev
studytrack.dev
studytube.dev
studyzen.dev
studyzone.dev
stuebbe.dev
stuehn.dev
stuessy.dev

DNS History

7 records (7 active, 0 former)

NSannalise.ns.cloudflare.comdenver.ns.cloudflare.comMXmail.studyguide.devmx1.onemail.vnmx2.onemail.vnmx3.onemail.vnA143.198.193.21
●NSannalise.ns.cloudflare.com2026-08-29 → 2026-08-31 · 2 obs
● 2026-08-29 21:19:20
● 2026-08-31 02:06:52
●NSdenver.ns.cloudflare.com2026-08-29 → 2026-08-31 · 2 obs
● 2026-08-29 21:19:20
● 2026-08-31 02:06:52
●MXmail.studyguide.dev2026-08-29 → 2026-08-31 · 2 obs
● 2026-08-29 21:19:20
● 2026-08-31 02:06:52
●MXmx1.onemail.vn2026-08-29 → 2026-08-31 · 2 obs
● 2026-08-29 21:19:20
● 2026-08-31 02:06:52
●MXmx2.onemail.vn2026-08-29 → 2026-08-31 · 2 obs
● 2026-08-29 21:19:20
● 2026-08-31 02:06:52
●MXmx3.onemail.vn2026-08-29 → 2026-08-31 · 2 obs
● 2026-08-29 21:19:20
● 2026-08-31 02:06:52
●A143.198.193.212026-08-29 → 2026-08-31 · 2 obs
● 2026-08-29 21:19:20
● 2026-08-31 02:06:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
devns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...-
studyguide.devdenver.ns.cloudflare.com, annalise.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.234

NS records: denver.ns.cloudflare.com, annalise.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studyguide.dev (unsigned zone)

⏱️ Timing

Total: 575ms | Queries: -

📄 Records

TypeCountSample Data
A1143.198.193.21
NS2annalise.ns.cloudflare.com, denver.ns.cloudflare.com
MX4mail.studyguide.dev (pri: 1), mx1.onemail.vn (pri: 5)...
TXT3v=spf1 +mx +a +ip4:61.28.233.9 ~all, v=spf1 include:_spf.onemail.vn ~all...
SOA1annalise.ns.cloudflare.com dns.cloudflar

Analysis

IP Addresses

studyguide.dev resolves to just one IP address, 143.198.193.21.

Host names like eduplanner.ca are further examples that share IP numbers with studyguide.dev.

Name Servers

Two name servers handle the delegation for studyguide.dev: annalise.ns.cloudflare.com and denver.ns.cloudflare.com.

studyguide.dev shares its NS records with other domains, for example 5esrlt.pages.dev, mapleeduverse.com, stlmobiletech.com and two others.

The name servers of studyguide.dev overlap at least partially with those of other domains — among them kaluhiskitchen.com, miaventilation.vn, mailllllll.pages.dev and two more.

These name servers commonly co-occur with the name servers noah.ns.cloudflare.com, susan.ns.cloudflare.com, lily.ns.cloudflare.com and cory.ns.cloudflare.com.

DNS names with 6 IP addresses:

annalise.ns.cloudflare.com resolves to 108.162.194.234, 162.159.38.234 and 172.64.34.234 among others, with 3 other IP addresses in total.

denver.ns.cloudflare.com resolves to 108.162.195.196, 162.159.44.196 and 172.64.35.196 among others, with 3 other IP addresses in total.

Mail Servers

The four mail servers for studyguide.dev are mail.studyguide.dev, mx1.onemail.vn, mx2.onemail.vn and mx3.onemail.vn.

There is at least a partial MX overlap between studyguide.dev and other domains, including truongthinhmotors.com, hivn.vn, mktsoftware.vn and two others.

The mail servers mx.inet.vn and aspmx.l.google.com are commonly paired with these mail servers.

The hosts mail.studyguide.dev, mx1.onemail.vn, mx2.onemail.vn and mx3.onemail.vn all resolve to exactly one IP address each: 61.28.233.9, 103.216.116.14, 103.72.96.29 and 103.56.162.10 respectively.