`congtythoigian.com`

DNSSEC	⚠️ Not signed
A	103.121.88.48^{🇻🇳 BKNS-AS-VN103.121.88.0/23 BKNS-CG-VN VT05-LK03 Xa La, Phuc La ward, Ha Dong district, Ha Noi city}
NS	`ln81041.bkns.com.vn` ⭐ ⚠️ Not in parent delegation
		A	103.121.88.41^{🇻🇳 BKNS-AS-VN103.121.88.0/23 BKNS-CG-VN VT05-LK03 Xa La, Phuc La ward, Ha Dong district, Ha Noi city}
NS	`ln81048.bkns.com.vn` ⚠️ Not in zone NS records
		A	103.121.88.41^{🇻🇳 BKNS-AS-VN103.121.88.0/23 BKNS-CG-VN VT05-LK03 Xa La, Phuc La ward, Ha Dong district, Ha Noi city}
NS	`ns81041.bkns.com.vn` ⚠️ Not in parent delegation
		A	103.121.88.41^{🇻🇳 BKNS-AS-VN103.121.88.0/23 BKNS-CG-VN VT05-LK03 Xa La, Phuc La ward, Ha Dong district, Ha Noi city}
NS	`ns81048.bkns.com.vn` ⚠️ Not in zone NS records
		A	103.121.88.41^{🇻🇳 BKNS-AS-VN103.121.88.0/23 BKNS-CG-VN VT05-LK03 Xa La, Phuc La ward, Ha Dong district, Ha Noi city}
MX	`mail.congtythoigian.com` ⭐
		A	103.121.88.48^{🇻🇳 BKNS-AS-VN103.121.88.0/23 BKNS-CG-VN VT05-LK03 Xa La, Phuc La ward, Ha Dong district, Ha Noi city}
TXT	`v=spf1 a mx ip4:103.121.88.41 ~all`
SOA	`ln81041.bkns.com.vn`hostmaster@congtythoigian.com 2025-12-10 #5

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1777316676

Subdomains

mail.congtythoigian.com

Same first word

congtythoigian.com

DNS History

12 records (6 active, 6 former)

○NSln187111.bkns.com.vn2018-06-13 → 2018-06-13 · 4 obs

○ 2017-01-09 09:01:56
● 2018-06-13 01:57:06
○ 2026-04-03 15:10:20
○ 2026-04-27 19:13:34

●NSln81041.bkns.com.vn2026-04-03 → 2026-04-27 · 3 obs

○ 2018-06-13 01:57:06
● 2026-04-03 15:10:20
● 2026-04-27 19:13:34

●NSln81048.bkns.com.vn2026-04-03 → 2026-04-27 · 3 obs

○ 2018-06-13 01:57:06
● 2026-04-03 15:10:20
● 2026-04-27 19:13:34

○NSns1.bkns.vn2015-06-16 → 2017-01-09 · 4 obs

● 2015-06-16 17:01:46
● 2017-01-09 09:01:56
○ 2018-06-13 01:57:06
○ 2026-04-27 19:13:34

○NSns187111.bkns.com.vn2018-06-13 → 2018-06-13 · 4 obs

○ 2017-01-09 09:01:56
● 2018-06-13 01:57:06
○ 2026-04-03 15:10:20
○ 2026-04-27 19:13:34

○NSns2.bkns.vn2015-06-16 → 2017-01-09 · 4 obs

● 2015-06-16 17:01:46
● 2017-01-09 09:01:56
○ 2018-06-13 01:57:06
○ 2026-04-27 19:13:34

●NSns81041.bkns.com.vn2026-04-03 → 2026-04-27 · 3 obs

○ 2018-06-13 01:57:06
● 2026-04-03 15:10:20
● 2026-04-27 19:13:34

●NSns81048.bkns.com.vn2026-04-03 → 2026-04-27 · 3 obs

○ 2018-06-13 01:57:06
● 2026-04-03 15:10:20
● 2026-04-27 19:13:34

●MXmail.congtythoigian.com2015-06-16 → 2026-04-27 · 2 obs

● 2015-06-16 17:01:46
● 2026-04-27 19:13:34

●A103.121.88.482026-04-03 → 2026-04-27 · 3 obs

○ 2018-06-13 01:57:06
● 2026-04-03 15:10:20
● 2026-04-27 19:13:34

○A103.48.81.482018-06-13 → 2018-06-13 · 4 obs

○ 2017-01-09 09:01:56
● 2018-06-13 01:57:06
○ 2026-04-03 15:10:20
○ 2026-04-27 19:13:34

○A123.30.187.1112015-06-16 → 2017-01-09 · 4 obs

● 2015-06-16 17:01:46
● 2017-01-09 09:01:56
○ 2018-06-13 01:57:06
○ 2026-04-27 19:13:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
congtythoigian.com	ns81048.bkns.com.vn, ln81048.bkns.com.vn	-

✅ Authoritative Response

Server:103.121.88.41

NS records: ns81048.bkns.com.vn, ln81048.bkns.com.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for congtythoigian.com (unsigned zone)

⏱️ Timing

Total: 3641ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.121.88.48`
NS	2	`ns81041.bkns.com.vn, ln81041.bkns.com.vn`
MX	1	`mail.congtythoigian.com (pri: 10)`
TXT	1	`v=spf1 a mx ip4:103.121.88.41 ~all`
SOA	1	`ln81041.bkns.com.vn hostmaster.congtytho`

Analysis

Hierarchy

congtythoigian.com is the parent of mail.congtythoigian.com.

IP Addresses

congtythoigian.com points to IP number 103.121.88.48.

Other host names include ln187111.bkns.com.vn, quangcaothuanphat.net, mail.congtythoigian.com and mail.quangcaothuanphat.net that share IP numbers with congtythoigian.com.

Name Servers

congtythoigian.com is delegated to four name servers: ln81041.bkns.com.vn, ln81048.bkns.com.vn, ns81041.bkns.com.vn and ns81048.bkns.com.vn.

congtythoigian.com shares name servers with other domains at least partially, for instance ditichlichsu-vanhoahanoi.com and quangcaothuanphat.net.

These name servers are commonly used with ln81049.bkns.com.vn, ns81049.bkns.com.vn and ns187111.bkns.com.vn.

Host names with one IP number:

ln81041.bkns.com.vn points to 103.121.88.41.

ln81048.bkns.com.vn points to 103.121.88.41.

ns81041.bkns.com.vn points to 103.121.88.41.

ns81048.bkns.com.vn points to 103.121.88.41.

Host names pointing to 103.121.88.41: ln81041.bkns.com.vn, ln81048.bkns.com.vn, ns81041.bkns.com.vn and ns81048.bkns.com.vn.