`study580.com`

DNSSEC	⚠️ Not signed
A	103.41.65.185^{🇭🇰 CTGSERVERLIMITED-AS-AP103.41.65.0/24 AppsBox Limited Flat 301, Trans Asia Ctr, Kwai Chung}
NS	`ns1.julydns.com` ⭐ ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns2.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.julydns.com` ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
SOA	`ns1.julydns.com`master@jmdns.com serial=1769878271

`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=1774752172

Same first word

study580.com

DNS History

12 records (5 active, 7 former)

●NSns1.judns.com2026-02-16 → 2026-03-29 · 3 obs

○ 2016-09-19 02:34:28
● 2026-02-16 01:51:20
● 2026-03-29 02:50:54

●NSns1.julydns.com2026-02-16 → 2026-03-29 · 3 obs

○ 2016-09-19 02:34:28
● 2026-02-16 01:51:20
● 2026-03-29 02:50:54

○NSns1.myhostadmin.net2015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 05:34:18
● 2016-09-19 02:34:28
○ 2026-02-16 01:51:20
○ 2026-03-29 02:50:54

●NSns2.judns.com2026-02-16 → 2026-03-29 · 3 obs

○ 2016-09-19 02:34:28
● 2026-02-16 01:51:20
● 2026-03-29 02:50:54

●NSns2.julydns.com2026-02-16 → 2026-03-29 · 3 obs

○ 2016-09-19 02:34:28
● 2026-02-16 01:51:20
● 2026-03-29 02:50:54

○NSns2.myhostadmin.net2015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 05:34:18
● 2016-09-19 02:34:28
○ 2026-02-16 01:51:20
○ 2026-03-29 02:50:54

○NSns3.myhostadmin.net2015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 05:34:18
● 2016-09-19 02:34:28
○ 2026-02-16 01:51:20
○ 2026-03-29 02:50:54

○NSns4.myhostadmin.net2015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 05:34:18
● 2016-09-19 02:34:28
○ 2026-02-16 01:51:20
○ 2026-03-29 02:50:54

○NSns5.myhostadmin.net2015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 05:34:18
● 2016-09-19 02:34:28
○ 2026-02-16 01:51:20
○ 2026-03-29 02:50:54

○NSns6.myhostadmin.net2015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 05:34:18
● 2016-09-19 02:34:28
○ 2026-02-16 01:51:20
○ 2026-03-29 02:50:54

●A103.41.65.1852026-02-16 → 2026-03-29 · 3 obs

○ 2016-09-19 02:34:28
● 2026-02-16 01:51:20
● 2026-03-29 02:50:54

○A121.42.157.512015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 05:34:18
● 2016-09-19 02:34:28
○ 2026-02-16 01:51:20
○ 2026-03-29 02:50:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
study580.com	ns1.judns.com, ns2.judns.com	2 records

✅ Authoritative Response

Server:162.159.27.251

NS records: ns1.judns.com, ns2.judns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for study580.com (unsigned zone)

⏱️ Timing

Total: 330ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.41.65.185`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.judns.com, ns2.judns.com)

Analysis

IP Addresses

study580.com points to a single IP number: 103.41.65.185.

Other host names, for instance vansonsh.com, cdgchs.com, mail.kawasaki-estate.com, wei-win.com and hanshengjk.com share IP numbers with study580.com.

Name Servers

study580.com is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

study580.com shares name servers with other domains at least partially, for instance rbnjg.cn, sjtime.com, hdx360fl.com, niaobie.cn and cunwei.com.cn.