`bhnbio.com`

DNSSEC	⚠️ Not signed
A	211.239.157.125^{🇰🇷 HOSTWAY-AS-KR211.239.157.0/24 SejongTelecom.co.ltd}
NS	`ns1.sdsns.com` ⭐
		A	211.115.203.112^{🇰🇷 HOSTWAY-AS-KR211.115.203.0/24 SejongTelecom.co.ltd}
NS	`ns2.sdsns.com`
		A	211.239.157.110^{🇰🇷 HOSTWAY-AS-KR211.239.157.0/24 SejongTelecom.co.ltd}
MX	`spam.bhnbio.com` ⭐
		A	193.122.107.68^{🇰🇷 ORACLE-OCI-31898193.122.96.0/20 KINX-Oracle}
			PTR	`spam.kyochon.com`
MX	`mail.bhnbio.com`⁽¹⁰⁾
		A	146.56.187.46^{🇰🇷 ORACLE-OCI-31898146.56.128.0/18 Oracle Corporation 2300 Oracle Way}
			PTR	`mail.kyochon.com`
TXT	`_globalsign-domain-verification=Lt2YxRcoAnLweMqw2VYrRsSC3ch1yXMozFyZGaTl7j`
TXT	`v=spf1 ip4:193.122.107.68 ip4:146.56.187.46 ~all`
SOA	`ns1.sdsns.com`firechoi@sds.co.kr 2018-03-09 #16

`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=1774818022

Subdomains

ns2.bhnbio.com

biz.bhnbio.com

mail.bhnbio.com

spam.bhnbio.com

ns.bhnbio.com

Same first word

bhnbio.com

DNS History

7 records (5 active, 2 former)

○NSbiz.bhnbio.com2016-12-20 → 2017-12-03 · 4 obs

● 2016-12-20 23:02:28
● 2017-12-03 07:14:52
○ 2026-02-15 00:20:50
○ 2026-03-29 21:29:36

●NSns1.sdsns.com2026-02-15 → 2026-03-29 · 3 obs

○ 2017-12-03 07:14:52
● 2026-02-15 00:20:50
● 2026-03-29 21:29:36

●NSns2.sdsns.com2026-02-15 → 2026-03-29 · 3 obs

○ 2017-12-03 07:14:52
● 2026-02-15 00:20:50
● 2026-03-29 21:29:36

○NSwin-wzqhm1yx4c92016-12-20 → 2017-12-03 · 4 obs

● 2016-12-20 23:02:28
● 2017-12-03 07:14:52
○ 2026-02-15 00:20:50
○ 2026-03-29 21:29:36

●MXmail.bhnbio.com2016-12-20 → 2026-03-29 · 2 obs

● 2016-12-20 23:02:28
● 2026-03-29 21:29:36

●MXspam.bhnbio.com2026-02-15 → 2026-03-29 · 3 obs

○ 2016-12-20 23:02:28
● 2026-02-15 00:20:50
● 2026-03-29 21:29:36

●A211.239.157.1252026-02-15 → 2026-03-29 · 2 obs

● 2026-02-15 00:20:50
● 2026-03-29 21:29:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, e.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net...	-
bhnbio.com	ns1.sdsns.com, ns2.sdsns.com	2 records

✅ Authoritative Response

Server:211.239.157.110

NS records: ns1.sdsns.com, ns2.sdsns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bhnbio.com (unsigned zone)

⏱️ Timing

Total: 480ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`211.239.157.125`
NS	2	`ns2.sdsns.com, ns1.sdsns.com`
MX	2	`mail.bhnbio.com (pri: 10), spam.bhnbio.com (pri: 5)`
TXT	2	`_globalsign-domain-verification=Lt2YxRco, v=spf1 ip4:193.122.107.68 ip4:146.56.187`
SOA	1	`ns1.sdsns.com firechoi.sds.co.kr`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.sdsns.com, ns2.sdsns.com)

Analysis

Hierarchy

bhnbio.com is the parent of ns2.bhnbio.com, biz.bhnbio.com, mail.bhnbio.com, spam.bhnbio.com and ns.bhnbio.com.

IP Addresses

bhnbio.com resolves to a single IP address: 211.239.157.125.

Other host names including kdrsvc.co.kr, docuwriter.co.kr, bujeon.com, adia.co.kr and nipongnaepong.co.kr share IP numbers with bhnbio.com.

Name Servers

bhnbio.com's delegation uses two name servers, ns1.sdsns.com and ns2.sdsns.com.

bhnbio.com shares the same name server setup as other domains, for example rpk.co.kr, lussocoffee.com, capsrok.co.kr, kabm.co.kr and sds.kr.

bhnbio.com at least partially shares name servers with other domains, including metawiki.net, lbox.co.kr, stonephoto.co.kr, ttbank.co.kr and elpusk.co.kr.

these name servers are commonly used together with ns3.direct.co.kr, ns4.direct.co.kr and ns1.direct.co.kr.

Host names with a single IP:

ns1.sdsns.com points to 211.115.203.112.

ns2.sdsns.com points to 211.239.157.110.

Mail Servers

bhnbio.com is handled by two mail servers: mail.bhnbio.com and spam.bhnbio.com.