`mx03.online.com.kh`

DNSSEC	⚠️ Not signed
A	203.189.128.83^{🇰🇭 Online203.189.128.0/24 ONLINE}
		PTR	`headquarter.online.com.kh`

`online.com.kh`

	DNSSEC	⚠️ Not signed
	A	203.189.157.8^{🇰🇭 Online203.189.157.0/24 COGETEL Co., Ltd 60 Monivong Boulevard}
	NS	`dns1.online.com.kh` ⭐
	NS	`dns1.bigpond.com.kh` ⚠️ Not in zone NS records
	NS	`dns2.online.com.kh`
	NS	`dns3.bigpond.com.kh` ⚠️ Not in zone NS records
	NS	`dns3.online.com.kh`
	NS	`dns4.online.com.kh` ⚠️ Not in parent delegation
	NS	`dns5.online.com.kh` ⚠️ Not in parent delegation
	NS	`dns7.online.com.kh` ⚠️ Not in parent delegation
	MX	`d149660a.ess.barracudanetworks.com` ⭐
	MX	`d149660b.ess.barracudanetworks.com`⁽¹⁰⁰⁾
	TXT	`v=spf1 ip4:124.248.161.53 ip4:203.189.128.68 include:spf.online.com.kh ~all`
	TXT	`google-site-verification=8OZRcEJGfyGE73zsNCjp0H5V_5yVMteg_ZR6Oyv00Ew`
	TXT	`s58dml99f6hqji0ildqsk8n94h`
	TXT	`apple-domain-verification=66Z77XCFurcl5AViise3UZXpFnzNZiLkmDCrWK2Jv6g`
	SOA	`dns1.online.com.kh`hostmaster@online.com.kh 2026-05-09 #1

WOT: UNKNOWN (50/100)
WOT: UNKNOWN (50/100)
📈 Tranco rank: #44,814

MX for

scn.online.com.kh

3tel.com.kh

thaiairways.com.kh

notes.online.com.kh

ded.org.kh

worldpoptour.com

nip.gov.kh

europ-continents.com.kh

forum.org.kh

Previously MX for

Same first word

mx03.com

mx03.ru

mx03.kinghost.net

mx03.org

Similar names

30xm.com

03xm.top

mx30.de

30mx.com

03xm.com

xm30.com

x3m0.com

xm03.com

mx30.dk

mx30.com

m30x.com

DNS History

2 records (1 active, 1 former)

○A203.189.128.202015-08-16 → 2017-05-10 · 4 obs

● 2015-08-16 17:21:10
● 2017-05-10 02:05:18
○ 2026-02-28 21:35:58
○ 2026-05-09 19:11:40

●A203.189.128.832026-02-28 → 2026-05-09 · 24 obs

○ 2017-05-10 02:05:18
● 2026-02-28 21:35:58
● 2026-03-01 04:34:44
○ 2026-03-11 04:32:18
● 2026-03-12 16:00:08
● 2026-03-17 20:53:12
○ 2026-03-17 22:29:04
● 2026-03-22 20:28:14
● 2026-03-23 07:50:18
○ 2026-03-23 13:46:22
● 2026-03-25 20:50:52
● 2026-03-28 15:13:06
○ 2026-03-28 16:39:42
● 2026-03-28 22:52:54
○ 2026-03-30 14:27:50
● 2026-04-01 14:24:40
● 2026-04-02 12:53:42
○ 2026-04-03 07:30:04
● 2026-04-03 20:38:14
● 2026-04-10 19:44:30
○ 2026-04-11 19:38:34
○ 2026-04-24 08:08:52
● 2026-05-06 06:57:14
● 2026-05-09 19:11:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kh	ns.camnet.com.kh, ns1.dns.net.kh, ns4.apnic.net, dns1.online.com.kh	5 records
online.com.kh	dns1.bigpond.com.kh, dns3.bigpond.com.kh, dns3.online.com.kh, dns1.online.com.kh...	1 record

✅ Authoritative Response

Server:203.189.128.1

NS records: dns1.bigpond.com.kh, dns3.bigpond.com.kh, dns3.online.com.kh, dns1.online.com.kh, dns2.online.com.kh

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kh (unsigned zone)

⏱️ Timing

Total: 3891ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`203.189.128.83`

📌 Glue Records Collected

Total: 6

In-bailiwick: 3 (ns.camnet.com.kh, ns1.dns.net.kh, dns1.online.com.kh)

Out-of-bailiwick: 3 (ns4.apnic.net, ns4.apnic.net, dns1.bigpond.com.kh)

Analysis

Mail Server Role

mx03.online.com.kh serves as the mail server for scn.online.com.kh, 3tel.com.kh, thaiairways.com.kh, notes.online.com.kh, ded.org.kh and a few other domains.

Both mx04.online.com.kh and mx02.online.com.kh serve as mail servers together with mx03.online.com.kh.

IP Addresses

mx03.online.com.kh points to an IP address: 203.189.128.83.

mx03.online.com.kh - robtex.com