mcuhk.com - robtex.com

mcuhk.com

DNSSEC⚠️ Not signed
A123.255.64.87🇭🇰 ERX-CUHKNET123.255.64.0/21 The Chinese University of Hong Kong
NSdns1.registrar-servers.com ⭐
A2610:a1:1024::200🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar
PTRdns1.namecheaphosting.com
PTRdns1.registrar-servers.com
A156.154.132.200🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar
PTRdns1.namecheaphosting.com
PTRdns1.registrar-servers.com
NSdns2.registrar-servers.com
A2610:a1:1025::200🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar
PTRdns2.namecheaphosting.com
PTRdns2.registrar-servers.com
A156.154.133.200🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar
PTRdns2.namecheaphosting.com
PTRdns2.registrar-servers.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4023:c0b::1a🇺🇸 Google2607:f8b0::/32
PTRdd-in-f26.1e100.net
A74.125.137.27🇺🇸 Google74.125.137.0/24
PTRdy-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4023:2801::1b🇺🇸 Google2607:f8b0::/32
PTRlcausi-in-f27.1e100.net
A192.178.128.27🇺🇸 Google192.178.128.0/24
PTRlcausi-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:4013:c1e::1b🇳🇱 Google2a00:1450:4013::/48
PTRyugrqzs-in-f27.1e100.net
A192.178.213.27🇺🇸 Google192.178.213.0/24
PTRyugrqzs-in-f27.1e100.net
MXaspmx2.googlemail.com(10)
A2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXaspmx3.googlemail.com(10)
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXaspmx4.googlemail.com(30)
A2a00:1450:4001:c21::1b🇩🇪 Google2a00:1450:4001::/48
PTRlcfrai-in-f27.1e100.net
A142.251.127.26🇺🇸 Google142.251.127.0/24
PTRlcfrai-in-f26.1e100.net
MXaspmx5.googlemail.com(30)
A2a00:1450:4025:c01::1b🇵🇱 Google2a00:1450:4025::/48
PTRrd-in-f27.1e100.net
A142.250.147.27🇺🇸 Google142.250.147.0/24
PTRrd-in-f27.1e100.net
TXTgoogle-site-verification=Ts1vbNf5w-IDLwQASLtXphexEdlLMDmSVMaAIs4VjfU
SOAdns1.registrar-servers.comhostmaster@registrar-servers.com serial=1771911800

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=1774720842

Subdomains

www.mcuhk.com

Same first word

mcuhk.com

Similar names

uchmk.net
chkmu.com
kmuch.de
hkucm.com
kchum.github.io
hkucm.org
umchk.com
kmchu.com
ucmhk.com
khumc.org
uchmk.com
uchmk.org
kmuch.cn
khumc.com

DNS History

20 records (10 active, 10 former)

20162017201820192020202120222023202420252026NSdns1.registrar-servers.comdns2.registrar-servers.comdns1.registrar-servers.com,dns3.registrar-servers.comdns4.registrar-servers.comdns5.registrar-servers.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA123.255.64.87162.255.119.250162.255.119.251192.64.119.20192.64.119.208192.64.119.5868.65.123.212
●NSdns1.registrar-servers.com2015-07-22 → 2026-03-28 · 8 obs
● 2015-07-22 14:18:54
● 2015-09-12 23:04:22
○ 2015-10-27 19:12:02
● 2016-01-01 09:38:54
○ 2016-04-03 02:33:34
○ 2016-04-15 13:21:00
● 2016-04-26 15:25:32
● 2026-03-28 18:25:24
○NSdns1.registrar-servers.com,2015-10-27 → 2016-04-15 · 7 obs
○ 2015-09-12 23:04:22
● 2015-10-27 19:12:02
○ 2016-01-01 09:38:54
● 2016-04-03 02:33:34
● 2016-04-15 13:21:00
○ 2016-04-26 15:25:32
○ 2026-03-28 18:25:24
●NSdns2.registrar-servers.com2015-07-22 → 2026-03-28 · 2 obs
● 2015-07-22 14:18:54
● 2026-03-28 18:25:24
○NSdns3.registrar-servers.com2015-07-22 → 2016-12-26 · 4 obs
● 2015-07-22 14:18:54
● 2016-12-26 04:31:02
○ 2017-07-01 18:17:44
○ 2026-03-28 18:25:24
○NSdns4.registrar-servers.com2015-07-22 → 2016-12-26 · 4 obs
● 2015-07-22 14:18:54
● 2016-12-26 04:31:02
○ 2017-07-01 18:17:44
○ 2026-03-28 18:25:24
○NSdns5.registrar-servers.com2015-07-22 → 2016-12-26 · 4 obs
● 2015-07-22 14:18:54
● 2016-12-26 04:31:02
○ 2017-07-01 18:17:44
○ 2026-03-28 18:25:24
●MXalt1.aspmx.l.google.com2015-07-22 → 2026-03-28 · 2 obs
● 2015-07-22 14:18:54
● 2026-03-28 18:25:24
●MXalt2.aspmx.l.google.com2015-07-22 → 2026-03-28 · 2 obs
● 2015-07-22 14:18:54
● 2026-03-28 18:25:24
●MXaspmx.l.google.com2015-07-22 → 2026-03-28 · 2 obs
● 2015-07-22 14:18:54
● 2026-03-28 18:25:24
●MXaspmx2.googlemail.com2015-07-22 → 2026-03-28 · 2 obs
● 2015-07-22 14:18:54
● 2026-03-28 18:25:24
●MXaspmx3.googlemail.com2015-07-22 → 2026-03-28 · 2 obs
● 2015-07-22 14:18:54
● 2026-03-28 18:25:24
●MXaspmx4.googlemail.com2015-07-22 → 2026-03-28 · 2 obs
● 2015-07-22 14:18:54
● 2026-03-28 18:25:24
●MXaspmx5.googlemail.com2015-07-22 → 2026-03-28 · 2 obs
● 2015-07-22 14:18:54
● 2026-03-28 18:25:24
●A123.255.64.872026-03-26 → 2026-03-28 · 3 obs
○ 2017-08-14 00:26:02
● 2026-03-26 11:16:10
● 2026-03-28 18:25:24
○A162.255.119.2502015-09-12 → 2016-12-26 · 8 obs
○ 2015-07-22 14:18:54
● 2015-09-12 23:04:22
○ 2015-10-27 19:12:02
○ 2016-04-15 13:21:00
● 2016-04-26 15:25:32
● 2016-12-26 04:31:02
○ 2017-07-01 18:17:44
○ 2026-03-28 18:25:24
○A162.255.119.2512016-01-01 → 2016-01-01 · 4 obs
○ 2015-10-27 19:12:02
● 2016-01-01 09:38:54
○ 2016-04-03 02:33:34
○ 2026-03-28 18:25:24
○A192.64.119.202016-04-03 → 2016-04-15 · 5 obs
○ 2016-01-01 09:38:54
● 2016-04-03 02:33:34
● 2016-04-15 13:21:00
○ 2016-04-26 15:25:32
○ 2026-03-28 18:25:24
○A192.64.119.2082015-10-27 → 2015-10-27 · 4 obs
○ 2015-09-12 23:04:22
● 2015-10-27 19:12:02
○ 2016-01-01 09:38:54
○ 2026-03-28 18:25:24
○A192.64.119.582017-07-01 → 2017-08-14 · 5 obs
○ 2016-12-26 04:31:02
● 2017-07-01 18:17:44
● 2017-08-14 00:26:02
○ 2026-03-26 11:16:10
○ 2026-03-28 18:25:24
○A68.65.123.2122015-07-22 → 2015-07-22 · 3 obs
● 2015-07-22 14:18:54
○ 2015-09-12 23:04:22
○ 2026-03-28 18:25:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
mcuhk.comdns1.registrar-servers.com, dns2.registrar-servers.com4 records

✅ Authoritative Response

Server:156.154.132.200

NS records: dns1.registrar-servers.com, dns2.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mcuhk.com (unsigned zone)

⏱️ Timing

Total: 417ms | Queries: -

📄 Records

TypeCountSample Data
A1123.255.64.87
NS2dns1.registrar-servers.com, dns2.registrar-servers.com
MX7aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)...
TXT1google-site-verification=Ts1vbNf5w-IDLwQ
SOA1dns1.registrar-servers.com hostmaster.re

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns1.registrar-servers.com, dns1.registrar-servers.com, dns2.registrar-servers.com...)

Analysis

Hierarchy

The parent of www.mcuhk.com is mcuhk.com.

IP Addresses

mcuhk.com points to a single IP: 123.255.64.87.

Other host names, such as www.mcuhk.com, share IP numbers with mcuhk.com.

Name Servers

Two name servers dns1.registrar-servers.com and dns2.registrar-servers.com handle delegation for mcuhk.com.

mcuhk.com uses the same name server setup as other domains, for example sunnytempo.com, scoutpet.com, thepullmanteam.com, agombia.com and aspenrobotics.org.

mcuhk.com partially shares name servers with other domains; examples include jengantic.com, towelday.com, handshake.io, hcastudent.org and groupcomm.net.

These name servers are commonly used with dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.

Host names with two IP numbers:

dns1.registrar-servers.com points to: 2610:a1:1024::200 and 156.154.132.200

dns2.registrar-servers.com points to: 2610:a1:1025::200 and 156.154.133.200

Mail Servers

Seven mail servers handle mcuhk.com: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com, aspmx5.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

mcuhk.com shares some mail servers with other domains, at least partially, such as softwarestudio.co.uk, bluesounds.net, mightyape.com.au, sudeep.co and ns500742.ns500742.ns500754.ns500731.ns500754.ns500731.ns500671.ns500688.ns500671.ns500671.ns500688.ns500671.ns500291.ns500649.ns500153.tenderladiesbz.com.

These mail servers are often used together with alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

Host names with two IP numbers

aspmx2.googlemail.com has IPs 2800:3f0:4003:c0f::1a and 108.177.123.26.

aspmx3.googlemail.com has IPs 2a00:1450:400b:c02::1b and 172.253.116.27.

aspmx4.googlemail.com has IPs 2a00:1450:4001:c21::1b and 142.251.127.26.

aspmx5.googlemail.com has IPs 2a00:1450:4025:c01::1b and 142.250.147.27.

aspmx.l.google.com has IPs 2607:f8b0:4023:c0b::1a and 74.125.137.27.

alt1.aspmx.l.google.com has IPs 2607:f8b0:4023:2801::1b and 192.178.128.27.

alt2.aspmx.l.google.com has IPs 2a00:1450:4013:c1e::1b and 192.178.213.27.