smsstudy.co - dns.ninja

`smsstudy.co`

DNSSEC	⚠️ Not signed
A	13.223.103.117^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
		PTR	`ec2-13-223-103-117.compute-1.amazonaws.com`
A	34.200.109.136^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
A	54.175.135.98^{🇺🇸 Amazon54.174.0.0/15 EC2 IAD prefix}
A	98.84.251.124^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
A	100.61.189.209^{🇺🇸 Amazon100.48.0.0/12 EC2 IAD prefix}
NS	`ns-194.awsdns-24.com` ⭐
		A	2600:9000:5300:c200::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-194.awsdns-24.com`
		A	205.251.192.194^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-194.awsdns-24.com`
NS	`ns-1086.awsdns-07.org`
		A	2600:9000:5304:3e00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1086.awsdns-07.org`
		A	205.251.196.62^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1086.awsdns-07.org`
NS	`ns-1850.awsdns-39.co.uk`
		A	2600:9000:5307:3a00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1850.awsdns-39.co.uk`
		A	205.251.199.58^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1850.awsdns-39.co.uk`
NS	`ns-615.awsdns-12.net`
		A	2600:9000:5302:6700::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-615.awsdns-12.net`
		A	205.251.194.103^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-615.awsdns-12.net`
SOA	`ns-194.awsdns-24.com`awsdns-hostmaster@amazon.com serial=1

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759730390

Same first word

smsstudy.net

smsstudy.com

smsstudy.info

smsstudy.co

DNS History

24 records (9 active, 15 former)

●NSns-1086.awsdns-07.org2026-02-25 → 2026-08-11 · 2 obs

● 2026-02-25 09:07:10
● 2026-08-11 10:51:36

●NSns-1850.awsdns-39.co.uk2026-02-25 → 2026-08-11 · 2 obs

● 2026-02-25 09:07:10
● 2026-08-11 10:51:36

●NSns-194.awsdns-24.com2026-02-25 → 2026-08-11 · 2 obs

● 2026-02-25 09:07:10
● 2026-08-11 10:51:36

●NSns-615.awsdns-12.net2026-02-25 → 2026-08-11 · 2 obs

● 2026-02-25 09:07:10
● 2026-08-11 10:51:36

○A100.28.200.2192026-02-25 → 2026-08-11 · 2 obs

○ 2026-02-25 09:07:10
○ 2026-08-11 10:51:36

○A100.29.19.2232026-02-25 → 2026-02-26 · 4 obs

● 2026-02-25 09:07:10
● 2026-02-26 06:37:48
○ 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

○A100.56.131.1332026-07-09 → 2026-07-09 · 3 obs

○ 2026-02-26 06:37:48
● 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

●A100.61.189.2092026-08-11 → 2026-08-11 · 2 obs

○ 2026-07-09 10:11:38
● 2026-08-11 10:51:36

●A13.223.103.1172026-08-11 → 2026-08-11 · 2 obs

○ 2026-07-09 10:11:38
● 2026-08-11 10:51:36

○A18.213.219.82026-02-25 → 2026-02-26 · 4 obs

● 2026-02-25 09:07:10
● 2026-02-26 06:37:48
○ 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

○A34.193.105.762026-07-09 → 2026-07-09 · 3 obs

○ 2026-02-26 06:37:48
● 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

●A34.200.109.1362026-08-11 → 2026-08-11 · 2 obs

○ 2026-07-09 10:11:38
● 2026-08-11 10:51:36

○A34.225.124.372026-02-25 → 2026-08-11 · 2 obs

○ 2026-02-25 09:07:10
○ 2026-08-11 10:51:36

○A34.233.101.1962026-02-25 → 2026-08-11 · 2 obs

○ 2026-02-25 09:07:10
○ 2026-08-11 10:51:36

○A52.200.7.2292026-02-25 → 2026-08-11 · 2 obs

○ 2026-02-25 09:07:10
○ 2026-08-11 10:51:36

○A52.202.210.1462026-02-25 → 2026-02-26 · 4 obs

● 2026-02-25 09:07:10
● 2026-02-26 06:37:48
○ 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

○A54.162.141.902026-07-09 → 2026-07-09 · 3 obs

○ 2026-02-26 06:37:48
● 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

○A54.163.181.652026-07-09 → 2026-07-09 · 3 obs

○ 2026-02-26 06:37:48
● 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

○A54.172.56.1862026-07-09 → 2026-07-09 · 3 obs

○ 2026-02-26 06:37:48
● 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

●A54.175.135.982026-08-11 → 2026-08-11 · 2 obs

○ 2026-07-09 10:11:38
● 2026-08-11 10:51:36

○A54.92.192.2072026-02-25 → 2026-08-11 · 2 obs

○ 2026-02-25 09:07:10
○ 2026-08-11 10:51:36

●A98.84.251.1242026-08-11 → 2026-08-11 · 2 obs

○ 2026-07-09 10:11:38
● 2026-08-11 10:51:36

○A98.86.63.32026-02-25 → 2026-02-26 · 4 obs

● 2026-02-25 09:07:10
● 2026-02-26 06:37:48
○ 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

○A98.95.167.1192026-02-25 → 2026-02-26 · 4 obs

● 2026-02-25 09:07:10
● 2026-02-26 06:37:48
○ 2026-07-09 10:11:38
○ 2026-08-11 10:51:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co	-
smsstudy.co	ns-1850.awsdns-39.co.uk, ns-194.awsdns-24.com, ns-1086.awsdns-07.org, ns-615.awsdns-12.net	-

✅ Authoritative Response

Server:205.251.194.103

NS records: ns-1850.awsdns-39.co.uk, ns-194.awsdns-24.com, ns-1086.awsdns-07.org, ns-615.awsdns-12.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for smsstudy.co (unsigned zone)

⏱️ Timing

Total: 282ms | Queries: -

📄 Records

Type	Count	Sample Data
A	5	`100.61.189.209, 98.84.251.124...`
NS	4	`ns-1086.awsdns-07.org, ns-1850.awsdns-39.co.uk...`
SOA	1	`ns-194.awsdns-24.com awsdns-hostmaster.a`

Analysis

IP Addresses

smsstudy.co resolves to five IP numbers: 13.223.103.117, 34.200.109.136, 54.175.135.98 and two others

Two other host names, along with ec2-13-223-103-117.compute-1.amazonaws.com, signup-me.com and textdonate.gop, also share IP numbers with smsstudy.co.

Name Servers

The NS records for smsstudy.co point to four name servers: ns-194.awsdns-24.com, ns-615.awsdns-12.net, ns-1086.awsdns-07.org and ns-1850.awsdns-39.co.uk.

smsstudy.co partially shares its NS delegation with several other domains, including lokus.no, smpl.tv, theadorables.com and two others.

ns-194.awsdns-24.com, ns-615.awsdns-12.net, ns-1086.awsdns-07.org and ns-1850.awsdns-39.co.uk each carry two IP addresses. ns-194.awsdns-24.com has 205.251.192.194 and 2600:9000:5300:c200::1; ns-615.awsdns-12.net has 205.251.194.103 and 2600:9000:5302:6700::1; ns-1086.awsdns-07.org has 205.251.196.62 and 2600:9000:5304:3e00::1; ns-1850.awsdns-39.co.uk has 205.251.199.58 and 2600:9000:5307:3a00::1.