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:3b93:3a85:d015:73cb^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:aa09:317d:56c8:21c^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.90.34.175^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-90-34-175.compute-1.amazonaws.com`
		A	54.87.136.34^{🇺🇸 Amazon54.87.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-87-136-34.compute-1.amazonaws.com`
NS	`nsg1.namebrightdns.com`
		A	2600:1f18:683a:ae1a:5671:338d:f889:e184^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:76a8:487c:5452:3217^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:2cc2:c24:ad68:1a20^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.158.3.36^{🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-158-3-36.compute-1.amazonaws.com`
		A	54.198.190.40^{🇺🇸 Amazon54.198.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-198-190-40.compute-1.amazonaws.com`
		A	54.234.83.254^{🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-234-83-254.compute-1.amazonaws.com`
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1a:4ffe:238c:718d:21f3^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:40ca:7d30:7e72:1e52^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:751c:4529:7c2b:4f58^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.87.120.241^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-87-120-241.compute-1.amazonaws.com`
		A	54.173.173.45^{🇺🇸 Amazon54.172.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-173-173-45.compute-1.amazonaws.com`
		A	75.101.213.27^{🇺🇸 Amazon75.101.128.0/17 Execution Services}
			PTR	`ec2-75-101-213-27.compute-1.amazonaws.com`
TXT	`v=spf1 -all`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-06-10 #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=1781074698

Same first word

grandstudy.ru

grandstudy.com

DNS History

21 records (7 active, 14 former)

●NSns1.namebrightdns.com2015-05-17 → 2026-06-10 · 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
● 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

●NSnsg1.namebrightdns.com2015-10-29 → 2026-06-10 · 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
● 2026-06-10 07:08:56

●NSnsg2.namebrightdns.com2015-10-29 → 2026-06-10 · 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
● 2026-06-10 07:08:56

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

● 2015-05-17 23:34:46
○ 2015-10-29 08:33:00
○ 2026-06-10 07:08:56

●A13.223.25.842026-02-25 → 2026-06-10 · 3 obs

○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-06-10 07:08:56

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-02-25 → 2026-06-10 · 3 obs

○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-06-10 07:08:56

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-02-25 → 2026-06-10 · 3 obs

○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

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

● 2015-05-17 23:34:46
○ 2018-07-02 11:24:00
○ 2026-06-10 07:08:56

●A54.243.117.1972026-02-25 → 2026-06-10 · 3 obs

○ 2018-07-02 11:24:00
● 2026-02-25 19:58:48
● 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

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

● 2015-05-17 23:34:46
○ 2018-07-02 11:24:00
○ 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

○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
○ 2026-06-10 07:08:56

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:3.87.120.241

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grandstudy.com (unsigned zone)

⏱️ Timing

Total: 310ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`54.243.117.197, 13.223.25.84`
AAAA	2	`2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee`
NS	2	`nsg2.namebrightdns.com, nsg1.namebrightdns.com`
TXT	2	`v=spf1 -all, afternic-verification-G9G3tM8T8EwEizzPzj`
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 points to 4 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, footmod.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 obama28.com, ip-75-8-118-204.logicsouth.com, sarau.org 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 6 IP addresses each:

nsg1.namebrightdns.com has IP addresses 54.158.3.36, 54.198.190.40, 54.234.83.254 plus three more.

nsg2.namebrightdns.com has IP addresses 3.87.120.241, 54.173.173.45, 75.101.213.27 plus three more.

Hosts with 4 IP addresses each:

ns1.namebrightdns.com has four IP addresses: 3.90.34.175, 54.87.136.34, 2600:1f18:683a:ae1a:3b93:3a85:d015:73cb and 2600:1f18:683a:ae1b:aa09:317d:56c8:21c.