`bfedu.co.kr`

DNSSEC	⚠️ Not signed
A	210.114.6.138^{🇰🇷 KT-NET210.114.0.0/18 contact chejumen@hitel.net if necessary contact country1@hitel.net if necessary contact express@hitel.net if necessary contact ezmate@hitel.net if necessary contact han322@hitel.net if necessary}
NS	`bfedu.co.kr` ⭐
		A	210.114.6.138^{🇰🇷 KT-NET210.114.0.0/18 contact chejumen@hitel.net if necessary contact country1@hitel.net if necessary contact express@hitel.net if necessary contact ezmate@hitel.net if necessary contact han322@hitel.net if necessary}
NS	`ns.bfedu.co.kr` ⚠️ Not in parent delegation
		A	211.63.185.169^{🇰🇷 KT-NET211.63.128.0/17 KORnet operation Center}
NS	`ns1.cafe24.co.kr` ⚠️ Not in zone NS records
		A	112.175.246.232^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`gjit.kr`
			PTR	`snoweb.kr`
			PTR	`sinc2030.co.kr`
		A	112.175.246.233^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.136^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.137^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns1.cafe24.com` ⚠️ Not in zone NS records
		A	112.175.246.230^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.246.231^{🇰🇷 KT-NET112.168.0.0/13}
		A	116.126.143.242^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
		A	175.125.93.134^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.135^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns2.bfedu.co.kr` ⚠️ Not in parent delegation
		A	211.63.185.168^{🇰🇷 KT-NET211.63.128.0/17 KORnet operation Center}
NS	`ns2.cafe24.co.kr` ⚠️ Not in zone NS records
		A	112.175.247.232^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`snoweb.kr`
			PTR	`sarchi.co.kr`
		A	112.175.247.233^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.146^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.147^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns2.cafe24.com` ⚠️ Not in zone NS records
		A	1.226.85.4^{🇰🇷 SKB-NET1.224.0.0/13 auto-generated route object for 1.224.0.0/13}
		A	1.234.0.4^{🇰🇷 SKB-NET1.232.0.0/13 auto-generated route object for 1.232.0.0/13}
		A	112.175.11.4^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.12.4^{🇰🇷 KT-NET112.168.0.0/13}
MX	`mail.bfedu.co.kr` ⭐
		A	223.130.85.61^{🇰🇷 DIRECT-AS-KR223.130.85.0/24}
			PTR	`sp-mu-mh01.mailnara.co.kr`
TXT	`v=spf1 ip4:223.130.85.11 ip4:223.130.85.12 ip4:223.130.85.13 ip4:223.130.86.1...`
SOA	`bfedu.co.kr`postmaster@bfedu.co.kr serial=20040906

`co.kr`

	DNSSEC	⚠️ Not signed
	NS	`g.dns.kr` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.kr` ⚠️ Not in parent delegation
	NS	`c.dns.kr` ⚠️ Not in parent delegation
	NS	`d.dns.kr` ⚠️ Not in parent delegation
	NS	`e.dns.kr` ⚠️ Not in parent delegation
	NS	`f.dns.kr` ⚠️ Not in parent delegation
	SOA	`g.dns.kr`domain-manager@nic.or.kr serial=2606130580

WOT: UNKNOWN (62/100)

NS for

bfedu.co.kr

Subdomains

ns.bfedu.co.kr

mail.bfedu.co.kr

ns2.bfedu.co.kr

Same first word

bfedu.co.kr

Similar names

fubed.life

edufb.net

efbud.com.pl

debuf.com

bufed.de

duebf.org

debuf.fr

efdub.com

bdefu.com

DNS History

13 records (9 active, 4 former)

●NSbfedu.co.kr2015-12-10 → 2026-06-13 · 3 obs

○ 2015-10-11 04:25:16
● 2015-12-10 13:45:50
● 2026-06-13 04:15:32

●NSns.bfedu.co.kr2015-12-10 → 2026-06-13 · 3 obs

○ 2015-10-11 04:25:16
● 2015-12-10 13:45:50
● 2026-06-13 04:15:32

●NSns1.cafe24.co.kr2026-03-31 → 2026-06-13 · 3 obs

○ 2015-12-10 13:45:50
● 2026-03-31 18:29:58
● 2026-06-13 04:15:32

●NSns1.cafe24.com2026-03-31 → 2026-06-13 · 3 obs

○ 2015-12-10 13:45:50
● 2026-03-31 18:29:58
● 2026-06-13 04:15:32

○NSns1.sdsns.com2015-05-08 → 2015-10-11 · 4 obs

● 2015-05-08 02:55:12
● 2015-10-11 04:25:16
○ 2015-12-10 13:45:50
○ 2026-06-13 04:15:32

●NSns2.bfedu.co.kr2015-12-10 → 2026-06-13 · 3 obs

○ 2015-10-11 04:25:16
● 2015-12-10 13:45:50
● 2026-06-13 04:15:32

●NSns2.cafe24.co.kr2026-03-31 → 2026-06-13 · 3 obs

○ 2015-12-10 13:45:50
● 2026-03-31 18:29:58
● 2026-06-13 04:15:32

●NSns2.cafe24.com2026-03-31 → 2026-06-13 · 3 obs

○ 2015-12-10 13:45:50
● 2026-03-31 18:29:58
● 2026-06-13 04:15:32

○NSns2.sdsns.com2015-05-08 → 2015-10-11 · 4 obs

● 2015-05-08 02:55:12
● 2015-10-11 04:25:16
○ 2015-12-10 13:45:50
○ 2026-06-13 04:15:32

●MXmail.bfedu.co.kr2015-05-08 → 2026-06-13 · 2 obs

● 2015-05-08 02:55:12
● 2026-06-13 04:15:32

●A210.114.6.1382026-03-31 → 2026-06-13 · 3 obs

○ 2017-03-27 15:06:18
● 2026-03-31 18:29:58
● 2026-06-13 04:15:32

○A220.73.160.2042015-05-08 → 2015-10-11 · 4 obs

● 2015-05-08 02:55:12
● 2015-10-11 04:25:16
○ 2015-12-10 13:45:50
○ 2026-06-13 04:15:32

○A222.122.213.2112015-12-10 → 2017-03-27 · 5 obs

○ 2015-10-11 04:25:16
● 2015-12-10 13:45:50
● 2017-03-27 15:06:18
○ 2026-03-31 18:29:58
○ 2026-06-13 04:15:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kr	g.dns.kr, c.dns.kr, e.dns.kr, b.dns.kr...	-
bfedu.co.kr	ns1.cafe24.com, ns2.cafe24.co.kr, ns2.cafe24.com, ns1.cafe24.co.kr	2 records

✅ Authoritative Response

Server:112.175.247.232

NS records: ns1.cafe24.com, ns2.cafe24.co.kr, ns2.cafe24.com, ns1.cafe24.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bfedu.co.kr (unsigned zone)

⏱️ Timing

Total: 2400ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.114.6.138`
NS	2	`ns.bfedu.co.kr, ns2.bfedu.co.kr`
MX	1	`mail.bfedu.co.kr (pri: 10)`
TXT	1	`v=spf1 ip4:223.130.85.11 ip4:223.130.85.`
SOA	1	`bfedu.co.kr postmaster.bfedu.co.kr`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.cafe24.co.kr, ns1.cafe24.co.kr)

Analysis

Hierarchy

bfedu.co.kr sits above ns.bfedu.co.kr, mail.bfedu.co.kr and ns2.bfedu.co.kr in the domain hierarchy.

Name Server Role

bfedu.co.kr acts as a name server for bfedu.co.kr, meaning it is self-referentially delegated.

ns1.cafe24.com, ns2.cafe24.com and ns1.cafe24.co.kr are commonly used as name server together with bfedu.co.kr.

IP Addresses

bfedu.co.kr resolves to one IP address: 210.114.6.138.

mupa.co.kr, worldtmc.com, walkerhillstory.com and two other host names share IP numbers with bfedu.co.kr.

Name Servers

bfedu.co.kr carries NS delegation across 7 name servers — bfedu.co.kr, ns1.cafe24.com, ns2.cafe24.com and 4 other.

There is at least partial name server overlap between bfedu.co.kr and other domains — jangwontech.com, hooray.kr, tourwed.com and two more among them.

These name servers regularly appear alongside ns2.cafe24.co.kr, ns.cafe24.com, ns0.cafe24.com and 4 other name servers in NS record sets.

Host names with five IP numbers:

ns1.cafe24.com resolves to four IP addresses: 112.175.246.230, 112.175.246.231, 116.126.143.242 and two others.

Host names with four IP numbers:

ns2.cafe24.com resolves to four IP addresses — 1.226.85.4, 1.234.0.4, 112.175.11.4 and 112.175.12.4.

ns1.cafe24.co.kr resolves to four IP addresses — 112.175.246.232, 112.175.246.233, 175.125.93.136 and 175.125.93.137.

ns2.cafe24.co.kr resolves to four IP addresses — 112.175.247.232, 112.175.247.233, 175.125.93.146 and 175.125.93.147.

Host names with one IP number:

bfedu.co.kr resolves to 210.114.6.138.

ns2.bfedu.co.kr resolves to 211.63.185.168.

ns.bfedu.co.kr resolves to 211.63.185.169.

Mail Servers

Mail for bfedu.co.kr is handled by a single mail server, mail.bfedu.co.kr.

mail.bfedu.co.kr points to one IP number — 223.130.85.61.

bfedu.co.kr - robtex.com

bfedu.co.kr

co.kr

NS for

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

Name Server Role

IP Addresses

Name Servers

Mail Servers

`bfedu.co.kr`

`co.kr`