grandstudy.com - dns.ninja

`grandstudy.com`

DNSSEC	⚠️ Not signed
A	2600:1f18:4ae:c605:dd5d:b838:5816:d7fb^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:4ae:c606:78d4:4260:db4e:aeee^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	13.223.25.84^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
A	54.243.117.197^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
NS	`ns1.namebrightdns.com` ⭐
		A	2600:1f18:683a:ae1a:c41d:b4cf:322b:2aa6^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.89.42.183^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-89-42-183.compute-1.amazonaws.com`
		A	100.58.124.42^{🇺🇸 Amazon100.48.0.0/12 EC2 IAD prefix}
			PTR	`ec2-100-58-124-42.compute-1.amazonaws.com`
NS	`nsg1.namebrightdns.com`
		A	2600:1f18:683a:ae1a:303c:9b15:3db3:a8a2^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:9b5a:7d38:2d23:6714^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.93.61.140^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-93-61-140.compute-1.amazonaws.com`
		A	54.234.103.190^{🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-234-103-190.compute-1.amazonaws.com`
		A	174.129.117.232^{🇺🇸 Amazon174.129.0.0/16 Execution Services}
			PTR	`ec2-174-129-117-232.compute-1.amazonaws.com`
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1a:1ff8:84b4:19de:5ca6^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:18c:37a5:651d:7bdc^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:ac3c:fcfb:521d:2fd5^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:ed3d:ef92:9331:4834^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.162.235.48^{🇺🇸 Amazon54.160.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-162-235-48.compute-1.amazonaws.com`
		A	54.221.37.2^{🇺🇸 Amazon54.221.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-221-37-2.compute-1.amazonaws.com`
		A	54.235.53.129^{🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-235-53-129.compute-1.amazonaws.com`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
TXT	`v=spf1 -all`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-08-06 #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=1786061799

Same first word

grandstudy.ru

grandstudy.com

DNS History

21 records (7 active, 14 former)

●NSns1.namebrightdns.com2015-05-17 → 2026-08-07 · 6 obs

● 2015-05-17 23:34:46
○ 2015-10-29 08:33:00
● 2016-02-01 17:10:36
○ 2016-05-02 03:22:50
● 2017-01-25 20:17:02
● 2026-08-07 00:20:24

○NSns2.namebrightdns.com2015-05-17 → 2018-07-02 · 8 obs

● 2015-05-17 23:34:46
○ 2015-10-29 08:33:00
● 2016-02-01 17:10:36
○ 2016-05-02 03:22:50
● 2017-01-25 20:17:02
● 2018-07-02 11:24:00
○ 2026-02-25 19:58:48
○ 2026-08-07 00:20:24

●NSnsg1.namebrightdns.com2015-10-29 → 2026-08-07 · 8 obs

○ 2015-05-17 23:34:46
● 2015-10-29 08:33:00
○ 2016-02-01 17:10:36
● 2016-05-02 03:22:50
○ 2017-01-25 20:17:02
○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-08-07 00:20:24

●NSnsg2.namebrightdns.com2015-10-29 → 2026-08-07 · 8 obs

○ 2015-05-17 23:34:46
● 2015-10-29 08:33:00
○ 2016-02-01 17:10:36
● 2016-05-02 03:22:50
○ 2017-01-25 20:17:02
○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-08-07 00:20:24

○MXanmail.namebrightmail.com2015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 23:34:46
○ 2015-10-29 08:33:00
○ 2026-08-07 00:20:24

●A13.223.25.842026-02-25 → 2026-08-07 · 3 obs

○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-08-07 00:20:24

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-02-25 → 2026-08-07 · 3 obs

○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-08-07 00:20:24

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-02-25 → 2026-08-07 · 3 obs

○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-08-07 00:20:24

○A52.200.243.1232016-05-02 → 2016-05-02 · 4 obs

○ 2016-02-01 17:10:36
● 2016-05-02 03:22:50
○ 2017-01-25 20:17:02
○ 2026-08-07 00:20:24

○A54.152.144.2432016-05-02 → 2016-05-02 · 4 obs

○ 2016-02-01 17:10:36
● 2016-05-02 03:22:50
○ 2017-01-25 20:17:02
○ 2026-08-07 00:20:24

○A54.174.31.2542015-10-29 → 2015-10-29 · 4 obs

○ 2015-05-17 23:34:46
● 2015-10-29 08:33:00
○ 2016-02-01 17:10:36
○ 2026-08-07 00:20:24

○A54.208.74.2152015-10-29 → 2015-10-29 · 4 obs

○ 2015-05-17 23:34:46
● 2015-10-29 08:33:00
○ 2016-02-01 17:10:36
○ 2026-08-07 00:20:24

○A54.209.90.812016-02-01 → 2016-02-01 · 4 obs

○ 2015-10-29 08:33:00
● 2016-02-01 17:10:36
○ 2016-05-02 03:22:50
○ 2026-08-07 00:20:24

○A54.236.84.1112015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 23:34:46
○ 2018-07-02 11:24:00
○ 2026-08-07 00:20:24

●A54.243.117.1972026-02-25 → 2026-08-07 · 3 obs

○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-08-07 00:20:24

○A54.82.156.192017-01-25 → 2017-01-25 · 4 obs

○ 2016-05-02 03:22:50
● 2017-01-25 20:17:02
○ 2018-07-02 11:24:00
○ 2026-08-07 00:20:24

○A54.85.146.1862015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 23:34:46
○ 2018-07-02 11:24:00
○ 2026-08-07 00:20:24

○A54.85.54.292016-02-01 → 2016-02-01 · 4 obs

○ 2015-10-29 08:33:00
● 2016-02-01 17:10:36
○ 2016-05-02 03:22:50
○ 2026-08-07 00:20:24

○A54.86.225.1562017-01-25 → 2017-01-25 · 4 obs

○ 2016-05-02 03:22:50
● 2017-01-25 20:17:02
○ 2018-07-02 11:24:00
○ 2026-08-07 00:20:24

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-05-17 → 2016-05-02 · 4 obs

● 2015-05-17 23:34:46
● 2016-05-02 03:22:50
○ 2017-01-25 20:17:02
○ 2026-08-07 00:20:24

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2017-01-25 → 2018-07-02 · 5 obs

○ 2016-05-02 03:22:50
● 2017-01-25 20:17:02
● 2018-07-02 11:24:00
○ 2026-02-25 19:58:48
○ 2026-08-07 00:20:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net...	-
grandstudy.com	nsg1.namebrightdns.com, nsg2.namebrightdns.com	12 records

✅ Authoritative Response

Server:174.129.117.232

NS records: nsg1.namebrightdns.com, nsg2.namebrightdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grandstudy.com (unsigned zone)

⏱️ Timing

Total: 218ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`54.243.117.197, 13.223.25.84`
AAAA	2	`2600:1f18:4ae:c606:78d4:4260:db4e:aeee, 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb`
NS	2	`nsg1.namebrightdns.com, nsg2.namebrightdns.com`
TXT	2	`afternic-verification-G9G3tM8T8EwEizzPzj, v=spf1 -all`
SOA	1	`ns1.namebrightdns.com dns.namebright.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (nsg1.namebrightdns.com, nsg1.namebrightdns.com, nsg1.namebrightdns.com...)

Analysis

IP Addresses

grandstudy.com has four IP addresses: 13.223.25.84, 54.243.117.197, 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb and 2600:1f18:4ae:c606:78d4:4260:db4e:aeee.

alpharoger.com, pipingteam.com, alphacomputers.com plus two other host names have IP numbers in common with grandstudy.com.

Name Servers

DNS for grandstudy.com is handled by three authoritative name servers: ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.

grandstudy.com has at least partial name server overlap with other domains, such as bet0559.com, obama28.com, ip-75-8-118-204.logicsouth.com and two others.

These name servers tend to appear together with the name servers ns2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com.

Hosts with 7 IP addresses each:

nsg2.namebrightdns.com has IP addresses 54.162.235.48, 54.221.37.2 and 54.235.53.129, plus 4 other.

Hosts with five IP addresses:

nsg1.namebrightdns.com has IP addresses 3.93.61.140, 54.234.103.190 and 174.129.117.232 along with two other addresses.

Host names carrying three IP numbers:

ns1.namebrightdns.com has IP addresses 3.89.42.183, 100.58.124.42 and 2600:1f18:683a:ae1a:c41d:b4cf:322b:2aa6.