dzstudy.com - robtex.com

dzstudy.com

DNSSEC⚠️ Not signed
A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix
A2600:1f18:4ae:c606:78d4:4260:db4e:aeee🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix
A13.223.25.84🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix
A54.243.117.197🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix
NSns1.namebrightdns.com ⭐
A2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A2600:1f18:683a:ae1a:7bc2:638d:8ca6:fcc4🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A2600:1f18:683a:ae1b:d57d:390a:64b4:d4f1🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A52.203.211.134🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix
A52.204.81.90🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix
NSnsg1.namebrightdns.com
A2600:1f18:683a:ae1a:303c:9b15:3db3:a8a2🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A2600:1f18:683a:ae1a:9b5a:7d38:2d23:6714🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A2600:1f18:683a:ae1b:30c4:9f4c:e959:1f38🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A2600:1f18:683a:ae1b:6fa6:bf7e:9de7:5e92🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A3.90.140.102🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix
A54.89.201.236🇺🇸 Amazon54.89.0.0/16 EC2 IAD prefix
A54.234.103.190🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix
NSnsg2.namebrightdns.com
A2600:1f18:683a:ae1a:f535:3a35:f979:7d42🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A2600:1f18:683a:ae1b:f6ec:2543:1b2e:f83c🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix
A3.90.60.86🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix
A54.221.37.2🇺🇸 Amazon54.221.0.0/16 EC2 IAD prefix
A54.225.31.228🇺🇸 Amazon54.224.0.0/15 EC2 IAD prefix
TXTv=spf1 -all
TXTafternic-verification-G9G3tM8T8EwEizzPzjGJWF
SOAns1.namebrightdns.comdns@namebright.com 2026-07-22 #1

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1784712282

Previously MX for

dzstudy.com

Same first word

dzstudy.com

Similar names

zdstudy.com
studyzd.cn

DNS History

16 records (7 active, 9 former)

20162017201820192020202120222023202420252026NSns1.namebrightdns.comnsg1.namebrightdns.comnsg2.namebrightdns.comdns.bizcn.comdns10.hichina.comdns2-r.dzsecurity.netdns9.hichina.commars-shared.dzsecurity.netMXdzstudy.comA13.223.25.842600:1f18:4ae:c605:dd5d:b838:5816:d7fb2600:1f18:4ae:c606:78d4:4260:db4e:aeee54.243.117.197103.232.215.133137.74.200.105CNAMEh.wknet.top
○NSdns.bizcn.com2015-07-12 → 2015-07-12 · 3 obs
● 2015-07-12 05:15:24
○ 2016-02-04 03:04:24
○ 2026-07-22 09:54:12
○NSdns10.hichina.com2016-04-23 → 2016-12-31 · 5 obs
○ 2016-02-04 03:04:24
● 2016-04-23 03:18:04
● 2016-12-31 20:51:12
○ 2018-09-12 10:41:24
○ 2026-07-22 09:54:12
○NSdns2-r.dzsecurity.net2018-09-12 → 2018-09-12 · 4 obs
○ 2016-12-31 20:51:12
● 2018-09-12 10:41:24
○ 2026-04-04 09:40:26
○ 2026-07-22 09:54:12
○NSdns9.hichina.com2016-04-23 → 2016-12-31 · 5 obs
○ 2016-02-04 03:04:24
● 2016-04-23 03:18:04
● 2016-12-31 20:51:12
○ 2018-09-12 10:41:24
○ 2026-07-22 09:54:12
○NSmars-shared.dzsecurity.net2018-09-12 → 2018-09-12 · 4 obs
○ 2016-12-31 20:51:12
● 2018-09-12 10:41:24
○ 2026-04-04 09:40:26
○ 2026-07-22 09:54:12
●NSns1.namebrightdns.com2026-04-04 → 2026-07-22 · 3 obs
○ 2018-09-12 10:41:24
● 2026-04-04 09:40:26
● 2026-07-22 09:54:12
●NSnsg1.namebrightdns.com2026-04-04 → 2026-07-22 · 3 obs
○ 2018-09-12 10:41:24
● 2026-04-04 09:40:26
● 2026-07-22 09:54:12
●NSnsg2.namebrightdns.com2026-04-04 → 2026-07-22 · 3 obs
○ 2018-09-12 10:41:24
● 2026-04-04 09:40:26
● 2026-07-22 09:54:12
○MXdzstudy.com2018-09-12 → 2018-09-12 · 3 obs
● 2018-09-12 10:41:24
○ 2026-04-04 09:40:26
○ 2026-07-22 09:54:12
○A103.232.215.1332015-11-07 → 2015-11-07 · 3 obs
● 2015-11-07 00:35:52
○ 2016-02-04 03:04:24
○ 2026-07-22 09:54:12
●A13.223.25.842026-04-04 → 2026-07-22 · 3 obs
○ 2018-09-12 10:41:24
● 2026-04-04 09:40:26
● 2026-07-22 09:54:12
○A137.74.200.1052018-09-12 → 2018-09-12 · 4 obs
○ 2016-02-04 03:04:24
● 2018-09-12 10:41:24
○ 2026-04-04 09:40:26
○ 2026-07-22 09:54:12
●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-04-04 → 2026-07-22 · 3 obs
○ 2018-09-12 10:41:24
● 2026-04-04 09:40:26
● 2026-07-22 09:54:12
●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-04-04 → 2026-07-22 · 3 obs
○ 2018-09-12 10:41:24
● 2026-04-04 09:40:26
● 2026-07-22 09:54:12
●A54.243.117.1972026-04-04 → 2026-07-22 · 3 obs
○ 2018-09-12 10:41:24
● 2026-04-04 09:40:26
● 2026-07-22 09:54:12
○CNAMEh.wknet.top2016-12-31 → 2016-12-31 · 3 obs
● 2016-12-31 20:51:12
○ 2018-09-12 10:41:24
○ 2026-07-22 09:54:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
dzstudy.comnsg1.namebrightdns.com, nsg2.namebrightdns.com12 records

✅ Authoritative Response

Server:3.90.140.102

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dzstudy.com (unsigned zone)

⏱️ Timing

Total: 195ms | Queries: -

📄 Records

TypeCountSample Data
A254.243.117.197, 13.223.25.84
AAAA22600:1f18:4ae:c606:78d4:4260:db4e:aeee, 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb
NS2nsg1.namebrightdns.com, nsg2.namebrightdns.com
TXT2afternic-verification-G9G3tM8T8EwEizzPzj, v=spf1 -all
SOA1ns1.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

dzstudy.com directs to four IP numbers, which are 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.

Among the host names that share IP numbers with dzstudy.com are static.www.shokun.com, desiguys.com, wjhsy.com and two others.

Name Servers

Three name servers are authoritative for dzstudy.com: ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.

At least some of dzstudy.com's name servers are shared with other domains, for example molespec.com, neroag.com, cardbs.com and two more.

It is common for these name servers to be used in conjunction with the name servers domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com and ns2.namebrightdns.com.

Host names resolving to 7 IP numbers:

nsg1.namebrightdns.com carries IP addresses 3.90.140.102, 54.89.201.236 and 54.234.103.190, with 4 other addresses beyond those.

Hostnames that point to five IP numbers:

ns1.namebrightdns.com directs to 52.203.211.134, 52.204.81.90, 2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca and two other IP addresses.

nsg2.namebrightdns.com directs to 3.90.60.86, 54.221.37.2, 54.225.31.228 and two other IP addresses.