devcourse.com - robtex.com

devcourse.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:2ca2🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:c92f🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.44.162Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.201.47🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSaspen.ns.cloudflare.com ⭐
A2606:4700:50::a29f:266d🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRaspen.ns.cloudflare.com
A2803:f800:50::6ca2:c26d🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRaspen.ns.cloudflare.com
A2a06:98c1:50::ac40:226d🇺🇸 Cloudflare2a06:98c1:50::/45
PTRaspen.ns.cloudflare.com
A108.162.194.109🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRaspen.ns.cloudflare.com
A162.159.38.109Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRaspen.ns.cloudflare.com
A172.64.34.109🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRaspen.ns.cloudflare.com
NSgordon.ns.cloudflare.com
A2606:4700:58::adf5:3baa🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgordon.ns.cloudflare.com
A2803:f800:50::6ca2:c1aa🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgordon.ns.cloudflare.com
A2a06:98c1:50::ac40:21aa🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgordon.ns.cloudflare.com
A108.162.193.170🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgordon.ns.cloudflare.com
A172.64.33.170🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgordon.ns.cloudflare.com
A173.245.59.170🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgordon.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.44.162, 172.67.201.47
IPv6 hints2606:4700:3031::6815:2ca2, 2606:4700:3035::ac43:c92f
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=80, name=cloudflare-ech.com
SOAaspen.ns.cloudflare.comdns@cloudflare.com serial=2403613967

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1778356751

Same first word

devcourse.com

Similar names

sourceved.com
sourcedev.net
devsource.de
vescudero.com
sourcedev.info
vescudero.net
docuverse.org
docuserve.com
devsource.co
devsource.ch
devsource.info
devsource.net
devsource.co.uk
docuverse.de
coursedev.com
devsource.xyz
sourceved.blogspot.com
docuserve.net
docuverse.com
coursedev.biz
sourcedev.app
securevod.com
uscovered.com
devsource.com
docuverse.io

DNS History

29 records (6 active, 23 former)

20162017201820192020202120222023202420252026NSaspen.ns.cloudflare.comgordon.ns.cloudflare.comns-cloud-d1.googledomains.comns-cloud-d2.googledomains.comns-cloud-d3.googledomains.comns-cloud-d4.googledomains.comns1.namebrightdns.comns1.parkingcrew.netns2.namebrightdns.comns2.parkingcrew.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.commail.h-email.netmail1.namebrightmail.commail2.namebrightmail.comA104.21.44.162172.67.201.472606:4700:3031::6815:2ca22606:4700:3035::ac43:c92f185.53.177.72600:1f18:4ae:c607:5974:bfa8:d54b:7fe52600:1f18:4ae:c608:1ae1:9fc3:6ee2:84dd44.208.83.18045.55.136.23054.84.240.23576.76.21.21
●NSaspen.ns.cloudflare.com2026-05-09 → 2026-05-09 · 2 obs
○ 2026-03-12 05:13:00
● 2026-05-09 20:06:36
●NSgordon.ns.cloudflare.com2026-05-09 → 2026-05-09 · 2 obs
○ 2026-03-12 05:13:00
● 2026-05-09 20:06:36
○NSns-cloud-d1.googledomains.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○NSns-cloud-d2.googledomains.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○NSns-cloud-d3.googledomains.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○NSns-cloud-d4.googledomains.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○NSns1.namebrightdns.com2026-03-12 → 2026-03-12 · 3 obs
○ 2017-02-10 17:30:50
● 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○NSns1.parkingcrew.net2015-08-19 → 2016-07-04 · 4 obs
● 2015-08-19 00:38:40
● 2016-07-04 20:31:08
○ 2017-02-10 17:30:50
○ 2026-05-09 20:06:36
○NSns2.namebrightdns.com2026-03-12 → 2026-03-12 · 3 obs
○ 2017-02-10 17:30:50
● 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○NSns2.parkingcrew.net2015-08-19 → 2016-07-04 · 4 obs
● 2015-08-19 00:38:40
● 2016-07-04 20:31:08
○ 2017-02-10 17:30:50
○ 2026-05-09 20:06:36
○MXalt1.aspmx.l.google.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○MXalt2.aspmx.l.google.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○MXalt3.aspmx.l.google.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○MXalt4.aspmx.l.google.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○MXaspmx.l.google.com2017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○MXmail.h-email.net2015-08-19 → 2016-07-04 · 4 obs
● 2015-08-19 00:38:40
● 2016-07-04 20:31:08
○ 2017-02-10 17:30:50
○ 2026-05-09 20:06:36
○MXmail1.namebrightmail.com2026-03-12 → 2026-03-12 · 3 obs
○ 2017-02-10 17:30:50
● 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○MXmail2.namebrightmail.com2026-03-12 → 2026-03-12 · 3 obs
○ 2017-02-10 17:30:50
● 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
●A104.21.44.1622026-05-09 → 2026-05-09 · 2 obs
○ 2026-03-12 05:13:00
● 2026-05-09 20:06:36
●A172.67.201.472026-05-09 → 2026-05-09 · 2 obs
○ 2026-03-12 05:13:00
● 2026-05-09 20:06:36
○A185.53.177.72015-08-19 → 2016-07-04 · 4 obs
● 2015-08-19 00:38:40
● 2016-07-04 20:31:08
○ 2017-02-10 17:30:50
○ 2026-05-09 20:06:36
○A2600:1f18:4ae:c607:5974:bfa8:d54b:7fe52026-03-12 → 2026-03-12 · 3 obs
○ 2017-02-10 17:30:50
● 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○A2600:1f18:4ae:c608:1ae1:9fc3:6ee2:84dd2026-03-12 → 2026-03-12 · 3 obs
○ 2017-02-10 17:30:50
● 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
●A2606:4700:3031::6815:2ca22026-05-09 → 2026-05-09 · 2 obs
○ 2026-03-12 05:13:00
● 2026-05-09 20:06:36
●A2606:4700:3035::ac43:c92f2026-05-09 → 2026-05-09 · 2 obs
○ 2026-03-12 05:13:00
● 2026-05-09 20:06:36
○A44.208.83.1802026-03-12 → 2026-03-12 · 3 obs
○ 2017-02-10 17:30:50
● 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○A45.55.136.2302017-02-10 → 2017-02-10 · 4 obs
○ 2016-07-04 20:31:08
● 2017-02-10 17:30:50
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○A54.84.240.2352026-03-12 → 2026-03-12 · 3 obs
○ 2017-02-10 17:30:50
● 2026-03-12 05:13:00
○ 2026-05-09 20:06:36
○A76.76.21.212026-03-12 → 2026-05-09 · 2 obs
○ 2026-03-12 05:13:00
○ 2026-05-09 20:06:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
devcourse.comgordon.ns.cloudflare.com, aspen.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.109

NS records: gordon.ns.cloudflare.com, aspen.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for devcourse.com (unsigned zone)

⏱️ Timing

Total: 176ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.44.162, 172.67.201.47
AAAA22606:4700:3031::6815:2ca2, 2606:4700:3035::ac43:c92f
NS2aspen.ns.cloudflare.com, gordon.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1aspen.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (gordon.ns.cloudflare.com, gordon.ns.cloudflare.com, gordon.ns.cloudflare.com...)

Analysis

IP Addresses

devcourse.com resolves to four IPs: 2606:4700:3031::6815:2ca2, 2606:4700:3035::ac43:c92f, 104.21.44.162 and 172.67.201.47.

Other host names such as chombas.com, (0x736578)photos.pw, allaspectswaterproofing.com, mae.blog.br and ahkscm.com share IP numbers with devcourse.com.

Name Servers

devcourse.com is delegated to two name servers: aspen.ns.cloudflare.com and gordon.ns.cloudflare.com.

devcourse.com uses the same name server setup as other domains, including wingzab.com, barternewsletter.com, cardcover.com, intraspace.com and staffperk.com.

At least part of the name servers for devcourse.com are shared with other domains, for instance ynkdoor.com, israrealty.ru, ffive88.click, hncar168.com and risernews.com.

These name servers are commonly used with nash.ns.cloudflare.com, rodrigo.ns.cloudflare.com, beau.ns.cloudflare.com and etta.ns.cloudflare.com.

Host names with six IP numbers:

aspen.ns.cloudflare.com points to: 2606:4700:50::a29f:266d, 2803:f800:50::6ca2:c26d, 2a06:98c1:50::ac40:226d, 108.162.194.109, 162.159.38.109 and 172.64.34.109.

gordon.ns.cloudflare.com points to: 2606:4700:58::adf5:3baa, 2803:f800:50::6ca2:c1aa, 2a06:98c1:50::ac40:21aa, 108.162.193.170, 172.64.33.170 and 173.245.59.170.