`stanfordprep.com`

DNSSEC	⚠️ Not signed
A	121.254.178.239^{🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary}
NS	`ns1.gabia.co.kr` ⭐
		A	20.200.205.248^{🇰🇷 Microsoft20.192.0.0/10}
NS	`ns.gabia.co.kr`
		A	43.201.170.100^{🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix}
			PTR	`ec2-43-201-170-100.ap-northeast-2.compute.amazonaws.com`
NS	`ns.gabia.net`
		A	121.78.117.39^{🇰🇷 GABIA-AS-KR121.78.117.0/24 Transit customer route announce}
			PTR	`ns1.gabia.co.kr`
		A	211.234.124.90^{🇰🇷 DACOM-NET211.234.0.0/17 contact jblee@aunet.nm.kr if necessary contact ojupark@aunet.nm.kr if necessary}
SOA	`ns.gabia.co.kr`hosting@gabia.com 2021-06-21 #10

`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=1777255871

Same first word

stanfordprep.com

DNS History

15 records (4 active, 11 former)

●NSns.gabia.co.kr2026-02-19 → 2026-04-27 · 3 obs

○ 2016-09-25 00:05:12
● 2026-02-19 07:53:44
● 2026-04-27 02:14:36

●NSns.gabia.net2026-02-19 → 2026-04-27 · 3 obs

○ 2016-09-25 00:05:12
● 2026-02-19 07:53:44
● 2026-04-27 02:14:36

●NSns1.gabia.co.kr2026-02-19 → 2026-04-27 · 3 obs

○ 2016-09-25 00:05:12
● 2026-02-19 07:53:44
● 2026-04-27 02:14:36

○NSns1.namebrightdns.com2015-06-28 → 2016-04-12 · 4 obs

● 2015-06-28 22:18:44
● 2016-04-12 14:49:10
○ 2016-09-25 00:05:12
○ 2026-04-27 02:14:36

○NSns2.namebrightdns.com2015-06-28 → 2016-04-12 · 4 obs

● 2015-06-28 22:18:44
● 2016-04-12 14:49:10
○ 2016-09-25 00:05:12
○ 2026-04-27 02:14:36

○NSnsg1.namebrightdns.com2016-04-12 → 2016-04-12 · 4 obs

○ 2015-06-28 22:18:44
● 2016-04-12 14:49:10
○ 2016-09-25 00:05:12
○ 2026-04-27 02:14:36

○MXanmail.namebrightmail.com2015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 22:18:44
○ 2015-11-05 22:40:48
○ 2026-04-27 02:14:36

●A121.254.178.2392026-02-19 → 2026-04-27 · 3 obs

○ 2016-09-25 00:05:12
● 2026-02-19 07:53:44
● 2026-04-27 02:14:36

○A52.200.243.1232016-04-12 → 2016-04-12 · 4 obs

○ 2016-01-26 18:25:54
● 2016-04-12 14:49:10
○ 2016-09-25 00:05:12
○ 2026-04-27 02:14:36

○A54.152.144.2432016-04-12 → 2016-04-12 · 4 obs

○ 2016-01-26 18:25:54
● 2016-04-12 14:49:10
○ 2016-09-25 00:05:12
○ 2026-04-27 02:14:36

○A54.174.31.2542015-06-28 → 2015-11-05 · 4 obs

● 2015-06-28 22:18:44
● 2015-11-05 22:40:48
○ 2016-01-26 18:25:54
○ 2026-04-27 02:14:36

○A54.208.74.2152015-06-28 → 2015-11-05 · 4 obs

● 2015-06-28 22:18:44
● 2015-11-05 22:40:48
○ 2016-01-26 18:25:54
○ 2026-04-27 02:14:36

○A54.209.90.812016-01-26 → 2016-01-26 · 4 obs

○ 2015-11-05 22:40:48
● 2016-01-26 18:25:54
○ 2016-04-12 14:49:10
○ 2026-04-27 02:14:36

○A54.85.54.292016-01-26 → 2016-01-26 · 4 obs

○ 2015-11-05 22:40:48
● 2016-01-26 18:25:54
○ 2016-04-12 14:49:10
○ 2026-04-27 02:14:36

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-06-28 → 2016-04-12 · 4 obs

● 2015-06-28 22:18:44
● 2016-04-12 14:49:10
○ 2016-09-25 00:05:12
○ 2026-04-27 02:14:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net...	-
stanfordprep.com	ns.gabia.co.kr, ns1.gabia.co.kr, ns.gabia.net	-

✅ Authoritative Response

Server:121.78.117.39

NS records: ns.gabia.co.kr, ns1.gabia.co.kr, ns.gabia.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stanfordprep.com (unsigned zone)

⏱️ Timing

Total: 1224ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.254.178.239`
NS	3	`ns.gabia.co.kr, ns1.gabia.co.kr...`
SOA	1	`ns.gabia.co.kr hosting.gabia.com`

Analysis

IP Addresses

stanfordprep.com points to a single IP: 121.254.178.239.

Other host names, for instance miubit.com, hinomura.com, hatena.kr, higps.com and clcard.com share IP numbers with stanfordprep.com.

Name Servers

stanfordprep.com is delegated to three name servers: ns.gabia.net, ns1.gabia.co.kr and ns.gabia.co.kr.

stanfordprep.com at least partially shares its name servers with other domains, for instance econoscience.com, zannavi.com, seongjin.net, kpbpa.co.kr and abcseoul.com.

These name servers are often used together with the name servers ns1.gabia.net.

Host names with two IP numbers:

ns.gabia.net points to 121.78.117.39 and 211.234.124.90.

Host names with one IP number:

ns1.gabia.co.kr points to 20.200.205.248.

ns.gabia.co.kr points to 43.201.170.100.

stanfordprep.com - robtex.com