studyknow.com - robtex.com
studyknow.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2600:1f18:4ae:c605:dd5d:b838:5816:d7fbAmazon2600:1f18::/35 AMAZON EC2 IAD prefix | ||||||
| A | 2600:1f18:4ae:c606:78d4:4260:db4e:aeeeAmazon2600:1f18::/35 AMAZON EC2 IAD prefix | ||||||
| A | 13.223.25.84Amazon13.216.0.0/13 | ||||||
| A | 54.243.117.197Amazon54.242.0.0/15 | ||||||
| NS | ns1.namebrightdns.com ⭐ | ||||||
| A | 2600:1f18:683a:ae1a:7bfe:7609:c768:92a4🇺🇸 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 | 54.173.159.28🇺🇸 Amazon54.172.0.0/15 EC2 IAD prefix | ||||||
| PTR | ec2-54-173-159-28.compute-1.amazonaws.com | ||||||
| NS | nsg1.namebrightdns.com | ||||||
| NS | nsg2.namebrightdns.com | ||||||
| TXT | v=spf1 -all | ||||||
| TXT | afternic-verification-G9G3tM8T8EwEizzPzjGJWF | ||||||
| SOA | ns1.namebrightdns.comdns@namebright.com 2026-09-22 #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.netnstld@verisign-grs.com serial=1790318669 | ||||||
Same first word
studyknow.com |
Similar names
DNS History
12 records (7 active, 5 former)
○NSns1.hover.com2015-06-03 → 2017-02-02 · 4 obs
● 2015-06-03 18:29:42
● 2017-02-02 02:19:52
○ 2026-09-08 16:11:32
○ 2026-09-25 06:58:50
● 2017-02-02 02:19:52
○ 2026-09-08 16:11:32
○ 2026-09-25 06:58:50
●NSns1.namebrightdns.com2026-09-08 → 2026-09-25 · 3 obs
○ 2017-02-02 02:19:52
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
○NSns2.hover.com2015-06-03 → 2017-02-02 · 4 obs
● 2015-06-03 18:29:42
● 2017-02-02 02:19:52
○ 2026-09-08 16:11:32
○ 2026-09-25 06:58:50
● 2017-02-02 02:19:52
○ 2026-09-08 16:11:32
○ 2026-09-25 06:58:50
●NSnsg1.namebrightdns.com2026-09-08 → 2026-09-25 · 3 obs
○ 2017-02-02 02:19:52
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
●NSnsg2.namebrightdns.com2026-09-08 → 2026-09-25 · 3 obs
○ 2017-02-02 02:19:52
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
○MXmx.hover.com.cust.hostedemail.com2015-06-03 → 2017-02-02 · 4 obs
● 2015-06-03 18:29:42
● 2017-02-02 02:19:52
○ 2026-09-08 16:11:32
○ 2026-09-25 06:58:50
● 2017-02-02 02:19:52
○ 2026-09-08 16:11:32
○ 2026-09-25 06:58:50
●A13.223.25.842026-09-08 → 2026-09-25 · 3 obs
○ 2017-02-02 02:19:52
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-09-08 → 2026-09-25 · 3 obs
○ 2017-02-02 02:19:52
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-09-08 → 2026-09-25 · 3 obs
○ 2017-02-02 02:19:52
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
●A54.243.117.1972026-09-08 → 2026-09-25 · 3 obs
○ 2017-02-02 02:19:52
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
● 2026-09-08 16:11:32
● 2026-09-25 06:58:50
○A64.98.145.302016-06-19 → 2017-02-02 · 5 obs
○ 2016-02-23 20:24:16
● 2016-06-19 21:23:32
● 2017-02-02 02:19:52
○ 2026-09-08 16:11:32
○ 2026-09-25 06:58:50
● 2016-06-19 21:23:32
● 2017-02-02 02:19:52
○ 2026-09-08 16:11:32
○ 2026-09-25 06:58:50
○A64.99.80.302015-06-03 → 2016-02-23 · 4 obs
● 2015-06-03 18:29:42
● 2016-02-23 20:24:16
○ 2016-06-19 21:23:32
○ 2026-09-25 06:58:50
● 2016-02-23 20:24:16
○ 2016-06-19 21:23:32
○ 2026-09-25 06:58:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| studyknow.com | nsg1.namebrightdns.com, nsg2.namebrightdns.com | 12 records |
✅ Authoritative Response
Server:3.91.250.66
NS records: nsg1.namebrightdns.com, nsg2.namebrightdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for studyknow.com (unsigned zone)
⏱️ Timing
Total: 158ms | 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
studyknow.com resolves to 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.
Name Servers
The authoritative name servers for studyknow.com are ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com — three in total.
Hosts with three IP address records:
The hostname ns1.namebrightdns.com directs to 3.89.42.183, 54.173.159.28 and 2600:1f18:683a:ae1a:7bfe:7609:c768:92a4.