codertheory.dev - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

codertheory.dev

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:df60🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:4674🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.70.116Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.223.96🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScourtney.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2682🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcourtney.ns.cloudflare.com
A2803:f800:50::6ca2:c282🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcourtney.ns.cloudflare.com
A2a06:98c1:50::ac40:2282🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcourtney.ns.cloudflare.com
A108.162.194.130🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcourtney.ns.cloudflare.com
A162.159.38.130Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcourtney.ns.cloudflare.com
A172.64.34.130🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcourtney.ns.cloudflare.com
NSjihoon.ns.cloudflare.com
A2606:4700:58::a29f:2ce9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjihoon.ns.cloudflare.com
A2803:f800:50::6ca2:c3e9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRjihoon.ns.cloudflare.com
A2a06:98c1:50::ac40:23e9🇺🇸 Cloudflare2a06:98c1:50::/45
PTRjihoon.ns.cloudflare.com
A108.162.195.233🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjihoon.ns.cloudflare.com
A162.159.44.233Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjihoon.ns.cloudflare.com
A172.64.35.233🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjihoon.ns.cloudflare.com
MXmx01.mail.icloud.com ⭐
A17.42.251.62🇺🇸 Apple17.42.0.0/16
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
PTRmx3.mail.icloud.com
A17.56.9.31🇺🇸 Apple17.56.9.0/24
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
A17.57.152.5🇺🇸 Apple17.57.152.0/23
PTRic4-privaterelay.appleid.com
PTRsmtp1.ic4-privaterelay.appleid.com
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
A17.57.154.33🇺🇸 Apple17.57.154.0/24
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
A17.57.155.25🇺🇸 Apple17.57.155.0/24
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
A17.57.156.30🇺🇸 Apple17.57.156.0/24
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
MXmx02.mail.icloud.com ⭐
A17.42.251.62🇺🇸 Apple17.42.0.0/16
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
PTRmx3.mail.icloud.com
A17.56.9.31🇺🇸 Apple17.56.9.0/24
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
A17.57.152.5🇺🇸 Apple17.57.152.0/23
PTRic4-privaterelay.appleid.com
PTRsmtp1.ic4-privaterelay.appleid.com
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
A17.57.154.33🇺🇸 Apple17.57.154.0/24
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
A17.57.155.25🇺🇸 Apple17.57.155.0/24
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
A17.57.156.30🇺🇸 Apple17.57.156.0/24
PTRmx01.mail.icloud.com
PTRmx02.mail.icloud.com
TXTapple-domain=JsQ8lX6uc6Ye8rTr
TXTapple-domain=O21nmNO1kDkiheqI
TXTgoogle-site-verification=CV1PyLWPqdBbXUsJpGMCbrgC9jgqWeD-knGgI9nUK3s
TXTgoogle-site-verification=sq3isunHxMGWnG1RZzOVF1LNkaKb9y6TaFMv0Vl_BtA
TXTv=spf1 include:icloud.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.70.116, 172.67.223.96
IPv6 hints2606:4700:3031::ac43:df60, 2606:4700:3035::6815:4674
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=82, name=cloudflare-ech.com
SOAcourtney.ns.cloudflare.comdns@cloudflare.com serial=2413865880

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

codertheory.com
codertheory.dev

Similar names

dorothyrece.com
decortheory.com

Previous names

codersden.dev
coderseb.dev
coderservices.dev
codersfx.dev
codershack.dev
codersinhoods.dev
codersite.dev
coderslab.dev
coderslibrary.dev
coderso.dev
coderspace.dev
codersparadise.dev
codersports.dev
coderspro.dev
codersrs.dev
codersworld.dev
codersync.dev
codersyug.dev
codertainment.dev

Next names

codertodata.dev
codertom.dev
coderum.dev
coderun.dev
coderunner.dev
coderup.dev
coderv.dev
coderverse.dev
codervibe.dev
codervibes.dev
coderwin.dev
coderx.dev
coderxiaode.dev
coderygroup.dev
codesadam.dev
codesafari.dev
codesafe.dev
codesagas.dev
codesage.dev
codesageai.dev

DNS History

8 records (8 active, 0 former)

NScourtney.ns.cloudflare.comjihoon.ns.cloudflare.comMXmx01.mail.icloud.commx02.mail.icloud.comA104.21.70.116172.67.223.962606:4700:3031::ac43:df602606:4700:3035::6815:4674
●NScourtney.ns.cloudflare.com2026-09-07 → 2026-09-08 · 2 obs
● 2026-09-07 09:42:58
● 2026-09-08 07:51:06
●NSjihoon.ns.cloudflare.com2026-09-07 → 2026-09-08 · 2 obs
● 2026-09-07 09:42:58
● 2026-09-08 07:51:06
●MXmx01.mail.icloud.com2026-09-07 → 2026-09-08 · 2 obs
● 2026-09-07 09:42:58
● 2026-09-08 07:51:06
●MXmx02.mail.icloud.com2026-09-07 → 2026-09-08 · 2 obs
● 2026-09-07 09:42:58
● 2026-09-08 07:51:06
●A104.21.70.1162026-09-07 → 2026-09-08 · 2 obs
● 2026-09-07 09:42:58
● 2026-09-08 07:51:06
●A172.67.223.962026-09-07 → 2026-09-08 · 2 obs
● 2026-09-07 09:42:58
● 2026-09-08 07:51:06
●A2606:4700:3031::ac43:df602026-09-07 → 2026-09-08 · 2 obs
● 2026-09-07 09:42:58
● 2026-09-08 07:51:06
●A2606:4700:3035::6815:46742026-09-07 → 2026-09-08 · 2 obs
● 2026-09-07 09:42:58
● 2026-09-08 07:51:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
devns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...-
codertheory.devjihoon.ns.cloudflare.com, courtney.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.130

NS records: jihoon.ns.cloudflare.com, courtney.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codertheory.dev (unsigned zone)

⏱️ Timing

Total: 1152ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.70.116, 172.67.223.96
AAAA22606:4700:3031::ac43:df60, 2606:4700:3035::6815:4674
NS2courtney.ns.cloudflare.com, jihoon.ns.cloudflare.com
MX2mx01.mail.icloud.com (pri: 10), mx02.mail.icloud.com (pri: 10)
TXT5apple-domain=JsQ8lX6uc6Ye8rTr, apple-domain=O21nmNO1kDkiheqI...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1courtney.ns.cloudflare.com dns.cloudflar

Analysis

IP Addresses

codertheory.dev directs to four IP numbers, which are 104.21.70.116, 172.67.223.96, 2606:4700:3031::ac43:df60 and 2606:4700:3035::6815:4674.

Two other host names, along with ligaturismo.com, reginaldopainting.com and escoteirossc.org.br, also share IP numbers with codertheory.dev.

Name Servers

codertheory.dev is served by two delegated name servers, courtney.ns.cloudflare.com and jihoon.ns.cloudflare.com.

codertheory.dev shares its NS records with other domains, for example eovehicles.com, akshmita.in, shiritoriwithfriends.com and two others.

At least some of codertheory.dev's name servers are shared with other domains, for example 303dragon.com, podiosoins.com, doom.it.com and two more.

These name servers tend to be used in conjunction with the name servers chuck.ns.cloudflare.com.

DNS names with 6 IP addresses:

courtney.ns.cloudflare.com carries IP addresses 108.162.194.130, 162.159.38.130 and 172.64.34.130, with 3 other addresses beyond those.

jihoon.ns.cloudflare.com carries IP addresses 108.162.195.233, 162.159.44.233 and 172.64.35.233, with 3 other addresses beyond those.

Mail Servers

codertheory.dev is served by two mail servers, mx01.mail.icloud.com and mx02.mail.icloud.com.

Among the domains sharing a mail server setup with codertheory.dev are appetithaeppchen.de, kethernoir.rocks, ambermar.uk and two others.

codertheory.dev overlaps on mail servers with certain other domains, a12.ca among them.

DNS names with 6 IP addresses:

mx01.mail.icloud.com carries IP addresses 17.42.251.62, 17.56.9.31 and 17.57.152.5, with 3 other addresses beyond those.

mx02.mail.icloud.com carries IP addresses 17.42.251.62, 17.56.9.31 and 17.57.152.5, with 3 other addresses beyond those.

These two host names — mx01.mail.icloud.com and mx02.mail.icloud.com — each point to 17.42.251.62 IP addresses.

These two host names — mx01.mail.icloud.com and mx02.mail.icloud.com — each point to 17.56.9.31 IP addresses.

These two host names — mx01.mail.icloud.com and mx02.mail.icloud.com — each point to 17.57.152.5 IP addresses.

These two host names — mx01.mail.icloud.com and mx02.mail.icloud.com — each point to 17.57.154.33 IP addresses.

These two host names — mx01.mail.icloud.com and mx02.mail.icloud.com — each point to 17.57.155.25 IP addresses.

These two host names — mx01.mail.icloud.com and mx02.mail.icloud.com — each point to 17.57.156.30 IP addresses.