`javascriptguru.com`

DNSSEC	⚠️ Not signed
NS	`a.share-dns.com` ⚠️ Not in zone NS records
		A	172.64.53.25^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`a4.share-dns.com` ⚠️ Not in parent delegation
		A	172.64.53.25^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`b.share-dns.net` ⚠️ Not in zone NS records
		A	172.64.52.239^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`b4.share-dns.net` ⚠️ Not in parent delegation
		A	172.64.52.239^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}

`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=1781213398

Same first word

javascriptguru.com

DNS History

10 records (4 active, 6 former)

●NSa.share-dns.com2026-06-11 → 2026-06-11 · 3 obs

○ 2017-04-18 14:35:38
● 2026-06-11 14:44:08
● 2026-06-11 21:53:22

●NSa4.share-dns.com2026-06-11 → 2026-06-11 · 3 obs

○ 2017-04-18 14:35:38
● 2026-06-11 14:44:08
● 2026-06-11 21:53:22

●NSb.share-dns.net2026-06-11 → 2026-06-11 · 3 obs

○ 2017-04-18 14:35:38
● 2026-06-11 14:44:08
● 2026-06-11 21:53:22

●NSb4.share-dns.net2026-06-11 → 2026-06-11 · 3 obs

○ 2017-04-18 14:35:38
● 2026-06-11 14:44:08
● 2026-06-11 21:53:22

○NSns51.1and1.com2015-05-28 → 2017-04-18 · 4 obs

● 2015-05-28 11:30:46
● 2017-04-18 14:35:38
○ 2026-06-11 14:44:08
○ 2026-06-11 21:53:22

○NSns52.1and1.com2015-05-28 → 2017-04-18 · 4 obs

● 2015-05-28 11:30:46
● 2017-04-18 14:35:38
○ 2026-06-11 14:44:08
○ 2026-06-11 21:53:22

○MXmx00.1and1.com2015-05-28 → 2017-04-18 · 4 obs

● 2015-05-28 11:30:46
● 2017-04-18 14:35:38
○ 2026-06-11 14:44:08
○ 2026-06-11 21:53:22

○MXmx01.1and1.com2015-05-28 → 2017-04-18 · 4 obs

● 2015-05-28 11:30:46
● 2017-04-18 14:35:38
○ 2026-06-11 14:44:08
○ 2026-06-11 21:53:22

○A216.250.120.1202016-07-16 → 2017-04-18 · 5 obs

○ 2016-03-23 00:30:32
● 2016-07-16 09:12:48
● 2017-04-18 14:35:38
○ 2026-06-11 14:44:08
○ 2026-06-11 21:53:22

○A74.208.87.1162015-05-28 → 2016-03-23 · 4 obs

● 2015-05-28 11:30:46
● 2016-03-23 00:30:32
○ 2016-07-16 09:12:48
○ 2026-06-11 21:53:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
javascriptguru.com	b4.share-dns.net, a4.share-dns.com	1 record

✅ Authoritative Response

Server:172.64.52.239

NS records: b4.share-dns.net, a4.share-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for javascriptguru.com (unsigned zone)

⏱️ Timing

Total: 2278ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`a.share-dns.com, b.share-dns.net`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (a4.share-dns.com)

Analysis

Name Servers

javascriptguru.com is delegated to four name servers, a4.share-dns.com, a.share-dns.com, b4.share-dns.net and b.share-dns.net.

At least some of javascriptguru.com's name servers are shared with other domains, for example shidabags.com, 77abc.com, jinshu888.com and two more.

These name servers tend to co-occur with a11.share-dns.com, b11.share-dns.net, a1.share-dns.com and 7 other name servers in the same DNS delegations.

a4.share-dns.com and a.share-dns.com share the IP address 172.64.53.25; b4.share-dns.net and b.share-dns.net share the IP address 172.64.52.239.

a4.share-dns.com along with a.share-dns.com each resolve to 172.64.53.25 IP addresses.

b4.share-dns.net along with b.share-dns.net each resolve to 172.64.52.239 IP addresses.

javascriptguru.com - robtex.com