51study.com - dns.ninja

51study.com

DNSSEC⚠️ Not signed
NSbryce.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c89🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbryce.ns.cloudflare.com
A2803:f800:50::6ca2:c389🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbryce.ns.cloudflare.com
A2a06:98c1:50::ac40:2389🇺🇸 Cloudflare2a06:98c1:50::/45
PTRbryce.ns.cloudflare.com
A108.162.195.137🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbryce.ns.cloudflare.com
A162.159.44.137Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbryce.ns.cloudflare.com
A172.64.35.137🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbryce.ns.cloudflare.com
NSraquel.ns.cloudflare.com
A2606:4700:50::a29f:26d2🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRraquel.ns.cloudflare.com
A2803:f800:50::6ca2:c2d2🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRraquel.ns.cloudflare.com
A2a06:98c1:50::ac40:22d2🇺🇸 Cloudflare2a06:98c1:50::/45
PTRraquel.ns.cloudflare.com
A108.162.194.210🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRraquel.ns.cloudflare.com
A162.159.38.210Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRraquel.ns.cloudflare.com
A172.64.34.210🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRraquel.ns.cloudflare.com
SOAbryce.ns.cloudflare.comdns@cloudflare.com serial=2407974436

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=1783956077

Same first word

51study.net.cn
51study.org
51study.net
51study.com

DNS History

9 records (2 active, 7 former)

20162017201820192020202120222023202420252026NSbryce.ns.cloudflare.comraquel.ns.cloudflare.comA146.235.218.8246.51.238.147.88.3.23352.69.166.23154.183.180.8267.229.168.4267.229.168.43
●NSbryce.ns.cloudflare.com2026-03-04 → 2026-07-13 · 2 obs
● 2026-03-04 06:00:58
● 2026-07-13 15:23:28
●NSraquel.ns.cloudflare.com2026-03-04 → 2026-07-13 · 2 obs
● 2026-03-04 06:00:58
● 2026-07-13 15:23:28
○A146.235.218.822026-03-04 → 2026-07-13 · 2 obs
○ 2026-03-04 06:00:58
○ 2026-07-13 15:23:28
○A46.51.238.12020-03-30 → 2020-03-30 · 4 obs
○ 2017-04-09 01:15:16
● 2020-03-30 13:32:04
○ 2026-03-04 06:00:58
○ 2026-07-13 15:23:28
○A47.88.3.2332016-07-25 → 2016-07-25 · 4 obs
○ 2016-03-17 22:18:10
● 2016-07-25 11:08:54
○ 2017-04-09 01:15:16
○ 2026-07-13 15:23:28
○A52.69.166.2312017-04-09 → 2017-04-09 · 4 obs
○ 2016-07-25 11:08:54
● 2017-04-09 01:15:16
○ 2020-03-30 13:32:04
○ 2026-07-13 15:23:28
○A54.183.180.822015-04-24 → 2015-12-17 · 4 obs
● 2015-04-24 04:46:10
● 2015-12-17 13:09:58
○ 2016-03-17 22:18:10
○ 2026-07-13 15:23:28
○A67.229.168.422016-03-17 → 2016-03-17 · 4 obs
○ 2015-12-17 13:09:58
● 2016-03-17 22:18:10
○ 2016-07-25 11:08:54
○ 2026-07-13 15:23:28
○A67.229.168.432016-03-17 → 2016-03-17 · 4 obs
○ 2015-12-17 13:09:58
● 2016-03-17 22:18:10
○ 2016-07-25 11:08:54
○ 2026-07-13 15:23:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
51study.comraquel.ns.cloudflare.com, bryce.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.210

NS records: raquel.ns.cloudflare.com, bryce.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51study.com (unsigned zone)

⏱️ Timing

Total: 1878ms | Queries: -

📄 Records

TypeCountSample Data
NS2bryce.ns.cloudflare.com, raquel.ns.cloudflare.com
SOA1bryce.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (raquel.ns.cloudflare.com, raquel.ns.cloudflare.com, raquel.ns.cloudflare.com...)

Analysis

Name Servers

51study.com is delegated to two name servers: bryce.ns.cloudflare.com and raquel.ns.cloudflare.com.

51study.com shares its NS records with other domains, for example redevix.com, sobatbangun.com, 51china.com and two others.

There is at least partial name server overlap between 51study.com and other domains — build-construct.com, pjas.net, betsssss.org and two more among them.

These name servers are routinely deployed together with the name servers cory.ns.cloudflare.com.

DNS names with 6 IP addresses:

bryce.ns.cloudflare.com resolves to 108.162.195.137, 162.159.44.137, 172.64.35.137 and 3 other IP addresses.

raquel.ns.cloudflare.com resolves to 108.162.194.210, 162.159.38.210, 172.64.34.210 and 3 other IP addresses.