`courseguru.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:4461^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:c1e1^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.68.97^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.193.225^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hope.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aa3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hope.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hope.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hope.ns.cloudflare.com`
		A	108.162.192.163^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hope.ns.cloudflare.com`
		A	172.64.32.163^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hope.ns.cloudflare.com`
		A	173.245.58.163^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hope.ns.cloudflare.com`
NS	`remy.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c73^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`remy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c373^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`remy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2373^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`remy.ns.cloudflare.com`
		A	108.162.195.115^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`remy.ns.cloudflare.com`
		A	162.159.44.115^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`remy.ns.cloudflare.com`
		A	172.64.35.115^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`remy.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4023:c0d::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`dl-in-f26.1e100.net`
		A	142.251.2.26^{🇺🇸 Google142.251.2.0/24}
			PTR	`dl-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:4025:402::1a^{🇳🇱 Google2a00:1450:4025::/48}
			PTR	`rb-in-f26.1e100.net`
		A	142.250.102.27^{🇺🇸 Google142.250.102.0/24}
			PTR	`rb-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:1015::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f26.1e100.net`
		A	172.253.135.27^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4025:c01::1a^{🇵🇱 Google2a00:1450:4025::/48}
			PTR	`rd-in-f26.1e100.net`
		A	142.250.147.27^{🇺🇸 Google142.250.147.0/24}
			PTR	`rd-in-f27.1e100.net`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.68.97, 172.67.193.225
		IPv6	2606:4700:3032::6815:4461, 2606:4700:3037::ac43:c1e1
SOA	`hope.ns.cloudflare.com`dns@cloudflare.com serial=2397635014

`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=1774556957

Same first word

courseguru.cn

courseguru.ca

courseguru.pk

courseguru.com

courseguru.net

Similar names

sourceguru.net

gurusource.com

sourceguru.org

DNS History

26 records (11 active, 15 former)

●NShope.ns.cloudflare.com2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
● 2026-03-26 20:38:12

○NSns.namespace4you.de2015-08-06 → 2017-06-02 · 5 obs

○ 2008-03-17 20:59:58
● 2015-08-06 17:25:02
● 2017-06-02 15:06:20
○ 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

○NSns1.dartsoft.co.uk2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 20:59:58
○ 2015-08-06 17:25:02
○ 2026-03-26 20:38:12

○NSns2.dartsoft.co.uk2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 20:59:58
○ 2015-08-06 17:25:02
○ 2026-03-26 20:38:12

○NSns2.namespace4you.de2015-08-06 → 2017-06-02 · 5 obs

○ 2008-03-17 20:59:58
● 2015-08-06 17:25:02
● 2017-06-02 15:06:20
○ 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

○NSns3.dartsoft.co.uk2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 20:59:58
○ 2015-08-06 17:25:02
○ 2026-03-26 20:38:12

●NSremy.ns.cloudflare.com2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
● 2026-03-26 20:38:12

●MXalt1.aspmx.l.google.com2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
● 2026-03-26 20:38:12

●MXalt2.aspmx.l.google.com2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
● 2026-03-26 20:38:12

●MXalt3.aspmx.l.google.com2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
● 2026-03-26 20:38:12

●MXalt4.aspmx.l.google.com2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
● 2026-03-26 20:38:12

●MXaspmx.l.google.com2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
● 2026-03-26 20:38:12

○MXhermes.tell-com.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 20:59:58
○ 2015-08-06 17:25:02
○ 2026-03-26 20:38:12

○MXmxlb.ispgateway.de2015-08-06 → 2017-06-02 · 5 obs

○ 2008-03-17 20:59:58
● 2015-08-06 17:25:02
● 2017-06-02 15:06:20
○ 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

●A104.21.68.972026-03-26 → 2026-03-26 · 2 obs

○ 2026-03-26 01:33:50
● 2026-03-26 20:38:12

○A134.119.2.1522015-08-06 → 2017-06-02 · 5 obs

○ 2008-03-17 20:59:58
● 2015-08-06 17:25:02
● 2017-06-02 15:06:20
○ 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

●A172.67.193.2252026-03-26 → 2026-03-26 · 2 obs

○ 2026-03-26 01:33:50
● 2026-03-26 20:38:12

○A188.114.96.02026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

○A188.114.97.02026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

○A212.104.158.1312008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 20:59:58
○ 2015-08-06 17:25:02
○ 2026-03-26 20:38:12

●A2606:4700:3032::6815:44612026-03-26 → 2026-03-26 · 2 obs

○ 2026-03-26 01:33:50
● 2026-03-26 20:38:12

●A2606:4700:3037::ac43:c1e12026-03-26 → 2026-03-26 · 2 obs

○ 2026-03-26 01:33:50
● 2026-03-26 20:38:12

○A2a00:1158:0:407:1e4c::12015-08-06 → 2016-09-26 · 5 obs

○ 2008-03-17 20:59:58
● 2015-08-06 17:25:02
● 2016-09-26 19:53:04
○ 2017-06-02 15:06:20
○ 2026-03-26 20:38:12

○A2a00:1158:1000:407::982017-06-02 → 2017-06-02 · 4 obs

○ 2016-09-26 19:53:04
● 2017-06-02 15:06:20
○ 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

○A2a06:98c1:3120::2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

○A2a06:98c1:3121::2026-03-26 → 2026-03-26 · 3 obs

○ 2017-06-02 15:06:20
● 2026-03-26 01:33:50
○ 2026-03-26 20:38:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
courseguru.com	hope.ns.cloudflare.com, remy.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.115

NS records: hope.ns.cloudflare.com, remy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courseguru.com (unsigned zone)

⏱️ Timing

Total: 178ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.193.225, 104.21.68.97`
AAAA	2	`2606:4700:3037::ac43:c1e1, 2606:4700:3032::6815:4461`
NS	2	`hope.ns.cloudflare.com, remy.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hope.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

courseguru.com maps to four IP numbers: 2606:4700:3032::6815:4461, 2606:4700:3037::ac43:c1e1, 104.21.68.97 and 172.67.193.225.

other host names include suspenders.fr, www.fafa118.com, toplist.raidrush.ws, www.ayuyaba.top and moderndads.net; they share IP numbers with courseguru.com.

Name Servers

Two name servers hope.ns.cloudflare.com and remy.ns.cloudflare.com handle the delegation for courseguru.com.

courseguru.com shares the same name server setup as other domains, for instance magdenli.com.tr, darabmusic.com.tr, ekspres.com.tr, freeforeverpac.com and 1win-casino.edu.ci.

courseguru.com at least partially shares name servers with other domains, for instance jdncbvreuj.pro, ahoskingit.com, keywestguide.com, eudyna.com and performanta.co.uk.

These name servers are commonly used alongside aida.ns.cloudflare.com.

Six IP addresses per host:

hope.ns.cloudflare.com points to 2606:4700:50::adf5:3aa3, 2803:f800:50::6ca2:c0a3, 2a06:98c1:50::ac40:20a3, 108.162.192.163, 172.64.32.163 and 173.245.58.163; remy.ns.cloudflare.com points to 2606:4700:58::a29f:2c73, 2803:f800:50::6ca2:c373, 2a06:98c1:50::ac40:2373, 108.162.195.115, 162.159.44.115 and 172.64.35.115

Mail Servers

courseguru.com is served by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

courseguru.com shares at least partially some mail servers with other domains, for instance aeu.edu, datamartinc.com, aliciacho.com, sourcebox.pt and cagluconate.com.