hc.com.sg - robtex.com

hc.com.sg

DNSSEC⚠️ Not signed
NSdnssec1.singnet.com.sg ⚠️ Not in zone NS records
A2001:c20:18:a::36🇸🇬 SINGNET2001:c20:18::/48 SingNet Pte Ltd c/o Singapore Telecommunications 31 Exeter Road Comcentre Podium Block, 05-04
A165.21.83.11🇸🇬 SINGNET165.21.0.0/16 SingNet Pte Ltd c/o Singapore Telecommunications 31 Exeter Road Comcentre Podium Block, 05-04
PTRdnssec1.singnet.com.sg
NSdnssec3.singnet.com.sg ⚠️ Not in zone NS records
A2001:c20:10:a::37🇸🇬 SINGNET2001:c20:10::/48 SingNet Pte Ltd c/o Singapore Telecommunications Accounts Payable Department 31 Exeter Road, 16-00 Comcent
A165.21.100.11🇸🇬 SINGNET165.21.0.0/16 SingNet Pte Ltd c/o Singapore Telecommunications 31 Exeter Road Comcentre Podium Block, 05-04
PTRdnssec3.singnet.com.sg

com.sg

DNSSEC⚠️ Not signed
NSds.sgnic.sg ⭐
NSdsany2.sgnic.sg ⚠️ Not in parent delegation
NSdsany3.sgnic.sg ⚠️ Not in parent delegation
NSdsany4.sgnic.sg ⚠️ Not in parent delegation
NSpch.sgzones.sg ⚠️ Not in parent delegation
SOAds.sgnic.sgdna@sgnic.sg serial=2603281830

Same first word

hc.church
hc.tel
hc.com.sa
hc.com.hk
hc.dk
hc.com.tw
hc.gov
hc.la
hc.lv
hc.ae
hc.edu.uy
hc.zone
hc.cx
hc.live
hc.cc
hc.com.vn
hc.by
hc.uz
hc.sg
hc.me.uk
hc.care
hc.clinic
hc.ca
hc.com.sg
hc.to
hc.hockey
hc.kz
hc.cl
hc.ru
hc.edu
hc.spb.ru
hc.jl.cn
hc.ws
hc.schule
hc.com.pl
hc.hk
hc.ag
hc.com.pe
hc.vc
hc.al
hc.ma
hc.co.za
hc.adv.br
hc.top
hc.org
hc.no
hc.sk
hc.com.br
hc.com
hc.co.uk
hc.edu.tw
hc.gov.cn
hc.is
hc.org.hk
hc.com.pk
hc.ln.cn
hc.jx.cn
hc.org.sa
hc.sc
hc.co.il
hc.net.tw
hc.vision
hc.wa.gov.au
hc.de
hc.lviv.ua
hc.eu
hc.healthcare
hc.com.tr
hc.edu.sg
hc.agency
hc.gs
hc.ee
hc.cz
hc.nl
hc.ac.kr
hc.school
hc.hu
hc.world
hc.fyi
hc.vg
hc.net.au
hc.rs
hc.com.pt
hc.pl
hc.am
hc.services
hc.go.kr
hc.fi
hc.co
hc.net.ar

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ch.casino
ch.ee
ch.s3-eu-west-1.amazonaws.com
ch.vu
ch.com.sa
ch.koeln
ch.weber
ch.net.sa
ch.fyi
ch.ht
ch.gy
ch.s3-website.eu-central-1.amazonaws.com
ch.gp
ch.care
ch.mk
ch.tax
ch.nu
ch.uy
ch.ly
ch.solutions
ch.fi
ch.tools
ch.si
ch.cz
ch.chat
ch.dev
ch.st
ch.am
ch.edu
ch.ac.kr
ch.holdings
ch.vin
ch.co.th
ch.ai
ch.pizza
ch.vanguard
ch.im
ch.abbott
ch.se
ch.co
ch.ws
ch.cn
ch.ms
ch.org
ch.ma
ch.com.cn
ch.dyndns.org
ch.edgesuite-staging.net
ch.de
ch.soccer
ch.je
ch.ch
ch.lt
ch.ge
ch.gd.cn
ch.kiev.ua
ch.com
ch.to
ch.tc
ch.rs
ch.ie
ch.immo
ch.ro
ch.gd
ch.net.au
ch.sg
ch.at
ch.io

DNS History

18 records (2 active, 16 former)

20162017201820192020202120222023202420252026NSdnssec1.singnet.com.sgdnssec3.singnet.com.sgdnssec2.singnet.com.sgns1.webhostsg.comns2.webhostsg.comns3.webhostsg.comns4.webhostsg.compridns.iwi.com.sgsecdns.iwi.com.sgMXmail-srv24.hc.com.sgmail.hc.com.sgrelay.iwi.com.sgus-smtp-inbound-1.mimecast.comus-smtp-inbound-2.mimecast.comA101.100.210.110101.100.210.221165.21.100.59203.117.178.16
●NSdnssec1.singnet.com.sg2020-07-15 → 2026-03-28 · 3 obs
○ 2019-11-04 20:13:14
● 2020-07-15 14:24:12
● 2026-03-28 18:47:08
○NSdnssec2.singnet.com.sg2020-07-15 → 2020-11-27 · 5 obs
○ 2019-11-04 20:13:14
● 2020-07-15 14:24:12
● 2020-11-27 07:05:34
○ 2021-06-09 21:08:04
○ 2026-03-28 18:47:08
●NSdnssec3.singnet.com.sg2020-07-15 → 2026-03-28 · 3 obs
○ 2019-11-04 20:13:14
● 2020-07-15 14:24:12
● 2026-03-28 18:47:08
○NSns1.webhostsg.com2016-05-29 → 2017-01-13 · 5 obs
○ 2016-04-19 15:49:52
● 2016-05-29 20:38:08
● 2017-01-13 11:43:32
○ 2019-11-04 20:13:14
○ 2026-03-28 18:47:08
○NSns2.webhostsg.com2016-05-29 → 2017-01-13 · 5 obs
○ 2016-04-19 15:49:52
● 2016-05-29 20:38:08
● 2017-01-13 11:43:32
○ 2019-11-04 20:13:14
○ 2026-03-28 18:47:08
○NSns3.webhostsg.com2016-05-29 → 2017-01-13 · 5 obs
○ 2016-04-19 15:49:52
● 2016-05-29 20:38:08
● 2017-01-13 11:43:32
○ 2019-11-04 20:13:14
○ 2026-03-28 18:47:08
○NSns4.webhostsg.com2016-05-29 → 2017-01-13 · 5 obs
○ 2016-04-19 15:49:52
● 2016-05-29 20:38:08
● 2017-01-13 11:43:32
○ 2019-11-04 20:13:14
○ 2026-03-28 18:47:08
○NSpridns.iwi.com.sg2015-07-07 → 2016-04-19 · 4 obs
● 2015-07-07 03:09:16
● 2016-04-19 15:49:52
○ 2016-05-29 20:38:08
○ 2026-03-28 18:47:08
○NSsecdns.iwi.com.sg2015-07-07 → 2016-04-19 · 4 obs
● 2015-07-07 03:09:16
● 2016-04-19 15:49:52
○ 2016-05-29 20:38:08
○ 2026-03-28 18:47:08
○MXmail-srv24.hc.com.sg2015-07-07 → 2016-11-23 · 4 obs
● 2015-07-07 03:09:16
● 2016-11-23 04:48:42
○ 2017-01-01 10:57:04
○ 2026-03-28 18:47:08
○MXmail.hc.com.sg2017-01-01 → 2017-01-13 · 5 obs
○ 2016-11-23 04:48:42
● 2017-01-01 10:57:04
● 2017-01-13 11:43:32
○ 2019-11-04 20:13:14
○ 2026-03-28 18:47:08
○MXrelay.iwi.com.sg2015-07-07 → 2016-08-24 · 4 obs
● 2015-07-07 03:09:16
● 2016-08-24 11:03:08
○ 2016-11-23 04:48:42
○ 2026-03-28 18:47:08
○MXus-smtp-inbound-1.mimecast.com2020-08-19 → 2021-06-09 · 5 obs
○ 2019-11-04 20:13:14
● 2020-08-19 14:35:16
● 2021-06-09 21:08:04
○ 2026-03-28 05:47:42
○ 2026-03-28 18:47:08
○MXus-smtp-inbound-2.mimecast.com2020-08-19 → 2021-06-09 · 5 obs
○ 2019-11-04 20:13:14
● 2020-08-19 14:35:16
● 2021-06-09 21:08:04
○ 2026-03-28 05:47:42
○ 2026-03-28 18:47:08
○A101.100.210.1102017-01-01 → 2017-01-13 · 5 obs
○ 2016-11-23 04:48:42
● 2017-01-01 10:57:04
● 2017-01-13 11:43:32
○ 2019-11-04 20:13:14
○ 2026-03-28 18:47:08
○A101.100.210.2212016-08-24 → 2016-11-23 · 5 obs
○ 2016-05-29 20:38:08
● 2016-08-24 11:03:08
● 2016-11-23 04:48:42
○ 2017-01-01 10:57:04
○ 2026-03-28 18:47:08
○A165.21.100.592020-07-15 → 2020-07-15 · 4 obs
○ 2019-11-04 20:13:14
● 2020-07-15 14:24:12
○ 2020-08-19 14:35:16
○ 2026-03-28 18:47:08
○A203.117.178.162015-07-07 → 2016-05-29 · 4 obs
● 2015-07-07 03:09:16
● 2016-05-29 20:38:08
○ 2016-08-24 11:03:08
○ 2026-03-28 18:47:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
sgpch.sgzones.sg, dsany2.sgnic.sg, dsany3.sgnic.sg, dsany4.sgnic.sg-
hc.com.sgdnssec1.singnet.com.sg, dnssec3.singnet.com.sg2 records

✅ Authoritative Response

Server:165.21.83.11

NS records: dnssec1.singnet.com.sg, dnssec3.singnet.com.sg

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hc.com.sg (unsigned zone)

⏱️ Timing

Total: 593ms | Queries: -

📄 Records

TypeCountSample Data

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dnssec3.singnet.com.sg, dnssec1.singnet.com.sg)

Analysis

Name Servers

hc.com.sg is delegated to two name servers dnssec1.singnet.com.sg and dnssec3.singnet.com.sg.

hc.com.sg shares the same name server setup as other domains, for instance gls.com.sg, farenco.com.sg, letat.com.sg, raffemet.com.sg and crowe.sg.

hc.com.sg at least partially shares name servers with other domains, for instance 165.74.219.in-addr.arpa, clsystems.com.sg, 73.21.165.in-addr.arpa, demex.com.sg and 142.15.116.in-addr.arpa.

these name servers are commonly used alongside dnssec2.singnet.com.sg.

Host names with two IP numbers:

The host name dnssec1.singnet.com.sg points to 2001:c20:18:a::36 and 165.21.83.11; the host name dnssec3.singnet.com.sg points to 2001:c20:10:a::37 and 165.21.100.11.