umclass.com - dns.ninja

`umclass.com`

DNSSEC	⚠️ Not signed
A	52.78.184.126^{🇰🇷 Amazon52.78.0.0/16 EC2 ICN prefix}
		PTR	`ec2-52-78-184-126.ap-northeast-2.compute.amazonaws.com`
NS	`ns-1675.awsdns-17.co.uk` ⭐
		A	2600:9000:5306:8b00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1675.awsdns-17.co.uk`
		A	205.251.198.139^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1675.awsdns-17.co.uk`
NS	`ns-1033.awsdns-01.org`
		A	2600:9000:5304:900::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1033.awsdns-01.org`
		A	205.251.196.9^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1033.awsdns-01.org`
NS	`ns-260.awsdns-32.com`
		A	2600:9000:5301:400::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-260.awsdns-32.com`
		A	205.251.193.4^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-260.awsdns-32.com`
NS	`ns-969.awsdns-57.net`
		A	2600:9000:5303:c900::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-969.awsdns-57.net`
		A	205.251.195.201^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-969.awsdns-57.net`
MX	`aspmx.daum.net` ⭐
		A	121.53.85.23^{🇰🇷 KAKAO-AY1121.53.80.0/21 Kakao}
MX	`alt.aspmx.daum.net`⁽²⁰⁾
		A	121.53.85.23^{🇰🇷 KAKAO-AY1121.53.80.0/21 Kakao}
TXT	`google-site-verification=C8GA-tEGzDi7Yv1rAH04P5mmG42Q5OCySP2GJADLQCU`
TXT	`v=spf1 include:_spf.daum.net ~all`
TXT	`v=spf1 include:mail.stibee.com ~all`
TXT	`v=spf1 ip4:10.159.57.14`
SOA	`ns-1675.awsdns-17.co.uk`awsdns-hostmaster@amazon.com serial=1

`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=1784732702

Same first word

umclass.com

Similar names

DNS History

10 records (7 active, 3 former)

○NSdns10.hichina.com2015-07-07 → 2015-11-12 · 4 obs

● 2015-07-07 10:39:08
● 2015-11-12 10:13:36
○ 2016-02-09 16:32:30
○ 2026-07-22 15:17:36

○NSdns9.hichina.com2015-07-07 → 2015-11-12 · 4 obs

● 2015-07-07 10:39:08
● 2015-11-12 10:13:36
○ 2016-02-09 16:32:30
○ 2026-07-22 15:17:36

●NSns-1033.awsdns-01.org2017-03-24 → 2026-07-22 · 3 obs

○ 2016-02-09 16:32:30
● 2017-03-24 10:55:28
● 2026-07-22 15:17:36

●NSns-1675.awsdns-17.co.uk2017-03-24 → 2026-07-22 · 3 obs

○ 2016-02-09 16:32:30
● 2017-03-24 10:55:28
● 2026-07-22 15:17:36

●NSns-260.awsdns-32.com2017-03-24 → 2026-07-22 · 3 obs

○ 2016-02-09 16:32:30
● 2017-03-24 10:55:28
● 2026-07-22 15:17:36

●NSns-969.awsdns-57.net2017-03-24 → 2026-07-22 · 3 obs

○ 2016-02-09 16:32:30
● 2017-03-24 10:55:28
● 2026-07-22 15:17:36

●MXalt.aspmx.daum.net2026-03-25 → 2026-07-22 · 2 obs

● 2026-03-25 15:14:00
● 2026-07-22 15:17:36

●MXaspmx.daum.net2026-03-25 → 2026-07-22 · 2 obs

● 2026-03-25 15:14:00
● 2026-07-22 15:17:36

○A13.124.44.82017-03-24 → 2017-03-24 · 3 obs

● 2017-03-24 10:55:28
○ 2026-03-25 15:14:00
○ 2026-07-22 15:17:36

●A52.78.184.1262026-03-25 → 2026-07-22 · 3 obs

○ 2017-03-24 10:55:28
● 2026-03-25 15:14:00
● 2026-07-22 15:17:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, j.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net...	-
umclass.com	ns-260.awsdns-32.com, ns-969.awsdns-57.net, ns-1033.awsdns-01.org, ns-1675.awsdns-17.co.uk	2 records

✅ Authoritative Response

Server:205.251.195.201

NS records: ns-260.awsdns-32.com, ns-969.awsdns-57.net, ns-1033.awsdns-01.org, ns-1675.awsdns-17.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for umclass.com (unsigned zone)

⏱️ Timing

Total: 297ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`52.78.184.126`
NS	4	`ns-1033.awsdns-01.org, ns-1675.awsdns-17.co.uk...`
MX	2	`aspmx.daum.net (pri: 10), alt.aspmx.daum.net (pri: 20)`
TXT	4	`google-site-verification=C8GA-tEGzDi7Yv1, v=spf1 include:_spf.daum.net ~all...`
SOA	1	`ns-1675.awsdns-17.co.uk awsdns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-260.awsdns-32.com, ns-260.awsdns-32.com)

Analysis

IP Addresses

umclass.com has exactly one IP address — 52.78.184.126.

There are other host names — ec2-52-78-184-126.ap-northeast-2.compute.amazonaws.com among them — that share IP numbers with umclass.com.

Name Servers

Four name servers handle the delegation for umclass.com: ns-260.awsdns-32.com, ns-969.awsdns-57.net, ns-1033.awsdns-01.org and ns-1675.awsdns-17.co.uk.

At least some of umclass.com's name servers are shared with other domains, for example d3mdudsf6zzhab.cloudfront.net, teamworksapp.co.nz, grove850-toll.com and two more.

It is common for these name servers to be used in conjunction with the name servers ns-460.awsdns-57.com, ns-1291.awsdns-33.org and ns-1625.awsdns-11.co.uk.

Four hostnames, each resolving to a pair of IP addresses: ns-260.awsdns-32.com directs to 205.251.193.4 and 2600:9000:5301:400::1; ns-969.awsdns-57.net directs to 205.251.195.201 and 2600:9000:5303:c900::1; ns-1033.awsdns-01.org directs to 205.251.196.9 and 2600:9000:5304:900::1; ns-1675.awsdns-17.co.uk directs to 205.251.198.139 and 2600:9000:5306:8b00::1.

Mail Servers

umclass.com uses two mail servers, aspmx.daum.net and alt.aspmx.daum.net.

The mail server setup of umclass.com matches that of other domains such as ollehshop.net, dwv.kr, ithepeople.kr and two others.

umclass.com has mail servers in common with other domains — for example crefun.kr, namdong.go.kr and rnbcorp.com.

Both aspmx.daum.net and alt.aspmx.daum.net have a single IP address, 121.53.85.23, and share it.

Host names pointing to 121.53.85.23 IP addresses: aspmx.daum.net and alt.aspmx.daum.net.