instructor.cc - dns.ninja

instructor.cc

DNSSEC⚠️ Not signed
A216.250.112.75🇺🇸 IONOS-AS216.250.112.0/20 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
NSns55.domaincontrol.com ⭐
A2603:5:21b2::1c🇺🇸 GODADDY-DNS2603:5:21b0::/44
PTRns55.domaincontrol.com
A97.74.107.28🇺🇸 GODADDY-DNS97.74.106.0/23
PTRns55.domaincontrol.com
NSns56.domaincontrol.com
A2603:5:22b2::1c🇺🇸 GODADDY-DNS2603:5:22b0::/44
PTRns56.domaincontrol.com
A173.201.75.28🇺🇸 GODADDY-DNS173.201.74.0/23
PTRns56.domaincontrol.com
SOAns55.domaincontrol.comdns@jomax.net 2026-05-20 #1

cc

DNSSEC🔒 Signed (DS record present)
NSac1.nstld.com ⭐
NSac2.nstld.com
NSac3.nstld.com
NSac4.nstld.com
SOAac1.nstld.cominfo@verisign-grs.com serial=1782863657
WOT: SAFE (1/100)

Same first word

instructor.net
instructor.in.ua
instructor.cc
instructor.ca
instructor.se
instructor.es
instructor.cz
instructor.bike
instructor.at
instructor.sk
instructor.co.il
instructor.ru
instructor.solutions
instructor.cl
instructor.info
instructor.nl
instructor.su
instructor.us
instructor.com.mx
instructor.onl
instructor.bio
instructor.be
instructor.company

Similar names

trutronics.us
trustronic.com
trutronics.com
trutronics.org

DNS History

7 records (3 active, 4 former)

20162017201820192020202120222023202420252026NSns55.domaincontrol.comns56.domaincontrol.comMXmailstore1.secureserver.netsmtp.secureserver.netA216.250.112.75184.168.221.5954.158.187.185
●NSns55.domaincontrol.com2015-07-10 → 2026-07-01 · 2 obs
● 2015-07-10 08:57:20
● 2026-07-01 00:20:24
●NSns56.domaincontrol.com2015-07-10 → 2026-07-01 · 2 obs
● 2015-07-10 08:57:20
● 2026-07-01 00:20:24
○MXmailstore1.secureserver.net2015-07-10 → 2017-04-04 · 4 obs
● 2015-07-10 08:57:20
● 2017-04-04 14:04:50
○ 2026-03-25 11:32:16
○ 2026-07-01 00:20:24
○MXsmtp.secureserver.net2015-07-10 → 2017-04-04 · 4 obs
● 2015-07-10 08:57:20
● 2017-04-04 14:04:50
○ 2026-03-25 11:32:16
○ 2026-07-01 00:20:24
○A184.168.221.592015-07-10 → 2017-04-04 · 4 obs
● 2015-07-10 08:57:20
● 2017-04-04 14:04:50
○ 2026-03-25 11:32:16
○ 2026-07-01 00:20:24
●A216.250.112.752026-07-01 → 2026-07-01 · 2 obs
○ 2026-03-25 11:32:16
● 2026-07-01 00:20:24
○A54.158.187.1852026-03-25 → 2026-03-25 · 3 obs
○ 2017-04-04 14:04:50
● 2026-03-25 11:32:16
○ 2026-07-01 00:20:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ccac2.nstld.com, ac1.nstld.com, ac4.nstld.com, ac3.nstld.com-
instructor.ccns56.domaincontrol.com, ns55.domaincontrol.com-

✅ Authoritative Response

Server:173.201.75.28

NS records: ns56.domaincontrol.com, ns55.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for instructor.cc (unsigned zone)

⏱️ Timing

Total: 361ms | Queries: -

📄 Records

TypeCountSample Data
A1216.250.112.75
NS2ns55.domaincontrol.com, ns56.domaincontrol.com
SOA1ns55.domaincontrol.com dns.jomax.net

Analysis

IP Addresses

instructor.cc resolves to one IP address: 216.250.112.75.

There are other host names — indieboston.com among them — that share IP numbers with instructor.cc.

Name Servers

DNS delegation for instructor.cc points to two name servers: ns55.domaincontrol.com and ns56.domaincontrol.com.

instructor.cc uses the same name servers as several other domains — among them lakolsch.com, luxurylistings.info, gwendyllyn.com and two more.

instructor.cc has partial name server overlap with other domains, including arbree.com.

ns55.domaincontrol.com directs to 97.74.107.28 and 2603:5:21b2::1c. ns56.domaincontrol.com directs to 173.201.75.28 and 2603:5:22b2::1c. Each host name carries two IP addresses.