`sdworker.kr`

DNSSEC	⚠️ Not signed
A	3.171.100.11^{🇺🇸 Amazon3.171.100.0/22}
		PTR	`server-3-171-100-11.iad12.r.cloudfront.net`
A	3.171.100.81^{🇺🇸 Amazon3.171.100.0/22}
A	3.171.100.102^{🇺🇸 Amazon3.171.100.0/22}
A	3.171.100.117^{🇺🇸 Amazon3.171.100.0/22}
NS	`cns1.hostcocoa.com` ⭐
		A	205.251.196.138^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1162.awsdns-17.org`
NS	`cns2.hostcocoa.com`
		A	205.251.194.81^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-593.awsdns-10.net`
NS	`cns3.hostcocoa.com`
		A	205.251.193.7^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-263.awsdns-32.com`
NS	`cns4.hostcocoa.com`
		A	205.251.199.181^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1973.awsdns-54.co.uk`
TXT	`v=spf1 ip4:52.79.92.223 ~all`
SOA	`cns1.hostcocoa.com`awsdns-hostmaster@amazon.com serial=1

`kr`

	DNSSEC	🔒 Signed (DS record present)
	NS	`g.dns.kr` ⭐ 🔒
	NS	`b.dns.kr`
	NS	`c.dns.kr` 🔒
	NS	`d.dns.kr` 🔒
	NS	`e.dns.kr` 🔒
	NS	`f.dns.kr` 🔒
	SOA	`g.dns.kr`domain-manager@nic.or.kr serial=2602170528

Same first word

sdworker.kr

Similar names

redworks.info

redworks.co

redworks.org

dreworks.pl

redworks.nl

redworks.com

erdworks.com

redworks.de

wordkers.com

rodwerks.com

redworks.lk

redworks.net

dworkers.com

kerwords.com

DNS History

12 records (8 active, 4 former)

●NScns1.hostcocoa.com2026-02-26 → 2026-02-26 · 2 obs

● 2026-02-26 02:08:36
● 2026-02-26 05:49:24

●NScns2.hostcocoa.com2026-02-26 → 2026-02-26 · 2 obs

● 2026-02-26 02:08:36
● 2026-02-26 05:49:24

●NScns3.hostcocoa.com2026-02-26 → 2026-02-26 · 2 obs

● 2026-02-26 02:08:36
● 2026-02-26 05:49:24

●NScns4.hostcocoa.com2026-02-26 → 2026-02-26 · 2 obs

● 2026-02-26 02:08:36
● 2026-02-26 05:49:24

○A13.226.144.1272026-02-26 → 2026-02-26 · 3 obs

○ 2026-02-26 02:08:36
● 2026-02-26 03:17:52
○ 2026-02-26 05:49:24

○A13.226.144.252026-02-26 → 2026-02-26 · 3 obs

○ 2026-02-26 02:08:36
● 2026-02-26 03:17:52
○ 2026-02-26 05:49:24

○A13.226.144.462026-02-26 → 2026-02-26 · 3 obs

○ 2026-02-26 02:08:36
● 2026-02-26 03:17:52
○ 2026-02-26 05:49:24

○A13.226.144.962026-02-26 → 2026-02-26 · 3 obs

○ 2026-02-26 02:08:36
● 2026-02-26 03:17:52
○ 2026-02-26 05:49:24

●A3.171.100.1022026-02-26 → 2026-02-26 · 3 obs

● 2026-02-26 02:08:36
○ 2026-02-26 03:17:52
● 2026-02-26 05:49:24

●A3.171.100.112026-02-26 → 2026-02-26 · 3 obs

● 2026-02-26 02:08:36
○ 2026-02-26 03:17:52
● 2026-02-26 05:49:24

●A3.171.100.1172026-02-26 → 2026-02-26 · 3 obs

● 2026-02-26 02:08:36
○ 2026-02-26 03:17:52
● 2026-02-26 05:49:24

●A3.171.100.812026-02-26 → 2026-02-26 · 3 obs

● 2026-02-26 02:08:36
○ 2026-02-26 03:17:52
● 2026-02-26 05:49:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kr	b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr...	-
sdworker.kr	cns4.hostcocoa.com, cns3.hostcocoa.com, cns1.hostcocoa.com, cns2.hostcocoa.com	-

✅ Authoritative Response

Server: 205.251.199.181

NS records: cns4.hostcocoa.com, cns3.hostcocoa.com, cns1.hostcocoa.com, cns2.hostcocoa.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sdworker.kr (unsigned zone)

⏱️ Timing

Total: 1085ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.171.100.11, 3.171.100.117...`
NS	4	`cns1.hostcocoa.com, cns2.hostcocoa.com...`
TXT	1	`v=spf1 ip4:52.79.92.223 ~all`
SOA	1	`cns1.hostcocoa.com awsdns-hostmaster.ama`

AI analysis

sdworker.kr maps to four IP numbers: 3.171.100.11, 3.171.100.81, 3.171.100.102 and 3.171.100.117.

Other host names, for instance d2j5lztio74hbp.cloudfront.net, innovationsconference.us, nekovm.org, vis-aggrowth.com and cadeauidee.org share IP numbers with sdworker.kr.

sdworker.kr is delegated to four name servers: cns1.hostcocoa.com, cns2.hostcocoa.com, cns3.hostcocoa.com and cns4.hostcocoa.com.

sdworker.kr at least partially shares name servers with other domains such as e-pretty.co.kr, adpd.co.kr, eicalabs.com, fruta.co.kr and jejuevservice.com.