uclass.com - dns.ninja

`uclass.com`

DNSSEC	⚠️ Not signed
A	183.111.139.233^{🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM}
A	203.245.12.110^{🇰🇷 KT-NET203.245.0.0/18 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}
A	210.114.23.164^{🇰🇷 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}
A	210.114.23.167^{🇰🇷 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	`uclass.com` ⭐
		A	183.111.139.233^{🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM}
		A	203.245.12.110^{🇰🇷 KT-NET203.245.0.0/18 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}
		A	210.114.23.164^{🇰🇷 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}
		A	210.114.23.167^{🇰🇷 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	`dns1.cafe24.co.kr` ⚠️ Not in zone NS records
		A	112.175.246.228^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.246.229^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.132^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.133^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`dns1.cafe24.com` ⚠️ Not in zone NS records
		A	112.175.246.226^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.246.227^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.130^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.131^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`dns2.cafe24.co.kr` ⚠️ Not in zone NS records
		A	112.175.247.228^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.247.229^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.142^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.143^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`dns2.cafe24.com` ⚠️ Not in zone NS records
		A	112.175.247.226^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.247.227^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.140^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.141^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns1.cafe24.co.kr` ⚠️ Not in parent delegation
		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 parent delegation
		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.cafe24.co.kr` ⚠️ Not in parent delegation
		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 parent delegation
		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}
SOA	`uclass.com`postmaster@uclass.com serial=20140806

`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=1785774717

NS for

uclass.com

Previously NS for

jmail.uclass.com

Subdomains

jmail.uclass.com

Same first word

uclass.com.cn

uclass.org

uclass.io

uclass.com.tw

uclass.net

uclass.ru

uclass.com

uclass.com.br

uclass.nl

Similar names

ucssal.org

sclusa.com

slucas.ca

clauss.org

clauss.zone

clasus.com

slcusa.com

cassul.com

cassul.cz

clauss.fr

clauss.at

clauss.info

uclsas.com

clauss.it

lucass.de

clauss.online

caluss.com

lussac.es

lussac.co

cslusa.com

lussac.net

clauss.co.uk

clasus.nl

clauss.com

saulsc.net

slucas.de

sclusa.net

clauss.biz

slucas.com.br

lcsusa.com

clauss.gr

sclaus.com

lucssa.com

csuals.com

lucass.com.br

suscla.com

cassul.com.br

clsaus.com

cslusa.net

salcus.it

lucass.com.vn

csuals.org

clauss.es

sacsul.com

csuals.net

slucas.fr

clauss.us

clsusa.net

slucas.com

sclaus.net

usclas.com

lussac.info

clsusa.com

clasus.ru

classu.co.kr

clauss.de

clauss.email

scalus.com

clauss.eu

clauss.name

lucass.com

DNS History

14 records (13 active, 1 former)

●NSdns1.cafe24.co.kr2026-02-18 → 2026-08-03 · 3 obs

○ 2015-06-01 21:43:36
● 2026-02-18 01:13:06
● 2026-08-03 16:53:16

●NSdns1.cafe24.com2026-02-18 → 2026-08-03 · 3 obs

○ 2015-06-01 21:43:36
● 2026-02-18 01:13:06
● 2026-08-03 16:53:16

●NSdns2.cafe24.co.kr2026-02-18 → 2026-08-03 · 3 obs

○ 2015-06-01 21:43:36
● 2026-02-18 01:13:06
● 2026-08-03 16:53:16

●NSdns2.cafe24.com2026-02-18 → 2026-08-03 · 3 obs

○ 2015-06-01 21:43:36
● 2026-02-18 01:13:06
● 2026-08-03 16:53:16

●NSns1.cafe24.co.kr2015-06-01 → 2026-08-03 · 50 obs

● 2015-06-01 21:43:36
● 2026-02-18 01:13:06
○ 2026-02-20 13:00:20
● 2026-02-26 00:25:00
● 2026-02-28 01:25:02
○ 2026-03-02 05:27:38
○ 2026-03-04 10:37:12
● 2026-03-08 03:32:10
● 2026-03-08 07:59:22
○ 2026-03-14 07:29:12
● 2026-03-20 12:14:08
○ 2026-03-24 13:47:14
● 2026-03-26 22:54:08
● 2026-04-18 09:36:38
○ 2026-04-18 14:02:50
● 2026-04-18 17:12:24
● 2026-04-20 10:39:22
○ 2026-04-25 20:28:54
○ 2026-04-28 19:19:32
● 2026-05-02 12:59:58
● 2026-05-07 04:50:36
○ 2026-05-09 09:50:22
○ 2026-05-12 14:30:56
● 2026-05-12 21:57:34
○ 2026-05-14 08:25:52
● 2026-05-14 11:08:02
● 2026-05-16 06:07:28
○ 2026-05-26 11:39:04
● 2026-05-27 11:58:44
● 2026-06-02 00:27:18
○ 2026-06-08 02:39:56
● 2026-06-09 10:15:14
● 2026-06-09 16:24:10
○ 2026-06-12 00:21:18
● 2026-06-12 12:49:08
● 2026-06-12 13:32:54
○ 2026-06-15 23:28:58
○ 2026-06-18 00:37:34
● 2026-06-19 01:04:38
○ 2026-06-25 05:54:08
● 2026-06-28 19:04:54
○ 2026-06-29 18:49:00
● 2026-06-30 00:54:24
○ 2026-07-01 06:42:32
● 2026-07-01 20:43:58
○ 2026-07-02 12:08:48
● 2026-07-15 13:46:14
○ 2026-07-24 21:20:40
● 2026-07-26 18:21:16
● 2026-08-03 16:53:16

●NSns1.cafe24.com2015-06-01 → 2026-08-03 · 50 obs

●NSns2.cafe24.co.kr2015-06-01 → 2026-08-03 · 50 obs

●NSns2.cafe24.com2015-06-01 → 2026-08-03 · 50 obs

●NSuclass.com2015-06-01 → 2026-08-03 · 2 obs

● 2015-06-01 21:43:36
● 2026-08-03 16:53:16

○A112.175.59.2322015-06-01 → 2017-03-19 · 4 obs

● 2015-06-01 21:43:36
● 2017-03-19 18:12:40
○ 2026-02-18 01:13:06
○ 2026-08-03 16:53:16

●A183.111.139.2332026-02-18 → 2026-08-03 · 3 obs

○ 2017-03-19 18:12:40
● 2026-02-18 01:13:06
● 2026-08-03 16:53:16

●A203.245.12.1102026-02-18 → 2026-08-03 · 3 obs

○ 2017-03-19 18:12:40
● 2026-02-18 01:13:06
● 2026-08-03 16:53:16

●A210.114.23.1642026-02-18 → 2026-08-03 · 3 obs

○ 2017-03-19 18:12:40
● 2026-02-18 01:13:06
● 2026-08-03 16:53:16

●A210.114.23.1672026-02-18 → 2026-08-03 · 3 obs

○ 2017-03-19 18:12:40
● 2026-02-18 01:13:06
● 2026-08-03 16:53:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, d.gtld-servers.net...	-
uclass.com	dns1.cafe24.com, dns2.cafe24.com, dns1.cafe24.co.kr, dns2.cafe24.co.kr	8 records

✅ Authoritative Response

Server:112.175.247.229

NS records: dns1.cafe24.com, dns2.cafe24.com, dns1.cafe24.co.kr, dns2.cafe24.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for uclass.com (unsigned zone)

⏱️ Timing

Total: 4537ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`210.114.23.164, 203.245.12.110...`
NS	4	`ns1.cafe24.co.kr, ns2.cafe24.co.kr...`
SOA	1	`uclass.com postmaster.uclass.com`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (dns1.cafe24.com, dns1.cafe24.com, dns1.cafe24.com...)

Analysis

Hierarchy

uclass.com is a parent domain of jmail.uclass.com.

Name Server Role

uclass.com has uclass.com as one of its name servers, making it self-hosted for DNS delegation.

Together with uclass.com, the hosts dns1.cafe24.com, dns2.cafe24.com and dns1.cafe24.co.kr are frequently configured as name servers.

IP Addresses

uclass.com resolves to four IP addresses: 183.111.139.233, 203.245.12.110, 210.114.23.164 and 210.114.23.167.

Among the host names that share IP numbers with uclass.com are t-muse.com, seohanf.com, bluesman.co.kr and two others.

Name Servers

uclass.com is delegated to 9 name servers: uclass.com, dns1.cafe24.com, dns2.cafe24.com and 6 other.

uclass.com shares at least some of its name servers with other domains, including koracks.com, taijintex.com, amares.co.kr and two others.

These name servers are frequently seen alongside ns2.cafe24.com, ns1.cafe24.com, ns1.cafe24.co.kr and 4 other name servers.

Hostnames that point to five IP numbers:

ns1.cafe24.com directs to 112.175.246.230, 112.175.246.231, 116.126.143.242 and two other IP addresses.

Hosts pointing to four IP addresses:

uclass.com points to 183.111.139.233, 203.245.12.110, 210.114.23.164 and 210.114.23.167.

dns1.cafe24.com points to 112.175.246.226, 112.175.246.227, 175.125.93.130 and 175.125.93.131.

dns2.cafe24.com points to 112.175.247.226, 112.175.247.227, 175.125.93.140 and 175.125.93.141.

ns2.cafe24.com points to 1.226.85.4, 1.234.0.4, 112.175.11.4 and 112.175.12.4.

dns1.cafe24.co.kr points to 112.175.246.228, 112.175.246.229, 175.125.93.132 and 175.125.93.133.

dns2.cafe24.co.kr points to 112.175.247.228, 112.175.247.229, 175.125.93.142 and 175.125.93.143.

ns1.cafe24.co.kr points to 112.175.246.232, 112.175.246.233, 175.125.93.136 and 175.125.93.137.

ns2.cafe24.co.kr points to 112.175.247.232, 112.175.247.233, 175.125.93.146 and 175.125.93.147.