studyguides.com - dns.ninja

`studyguides.com`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:86f^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:96f^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:4529^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.8.111^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.9.111^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.69.41^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`christina.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26c1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`christina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`christina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`christina.ns.cloudflare.com`
		A	108.162.194.193^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`christina.ns.cloudflare.com`
		A	162.159.38.193^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`christina.ns.cloudflare.com`
		A	172.64.34.193^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`christina.ns.cloudflare.com`
NS	`patryk.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c7a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`patryk.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c37a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`patryk.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:237a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`patryk.ns.cloudflare.com`
		A	108.162.195.122^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`patryk.ns.cloudflare.com`
		A	162.159.44.122^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`patryk.ns.cloudflare.com`
		A	172.64.35.122^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`patryk.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c2d::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ry-in-f26.1e100.net`
		A	172.253.115.26^{🇺🇸 Google172.253.115.0/24}
			PTR	`bg-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-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	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=3QmFyhL8ROxcYfmtflQj2su0CsKwbodnUTvzWrSolAE`
TXT	`google-site-verification=LUKkmHRZqi7yz83ebdPYKzRnB4HL29rWK6BeC6x2MYw`
TXT	`v=spf1 include:dc-aa8e722993._spfm.studyguides.com ~all`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.26.8.111, 104.26.9.111, 172.67.69.41
		IPv6 hints	2606:4700:20::681a:86f, 2606:4700:20::681a:96f, 2606:4700:20::ac43:4529
SOA	`christina.ns.cloudflare.com`dns@cloudflare.com serial=2409423021

`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=1784866507

📈 Tranco rank: #179,046

Subdomains

www.studyguides.com

Same first word

studyguides.net.au

studyguides.com.ng

studyguides.com.au

studyguides.info

studyguides.com

DNS History

28 records (13 active, 15 former)

●NSchristina.ns.cloudflare.com2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

○NSns-us.1and1-dns.com2016-05-02 → 2017-01-31 · 5 obs

○ 2016-01-21 20:31:26
● 2016-05-02 20:58:46
● 2017-01-31 20:51:38
○ 2020-02-29 07:33:34
○ 2026-07-24 04:34:02

○NSns-us.1and1-dns.de2016-05-02 → 2017-01-31 · 5 obs

○ 2016-01-21 20:31:26
● 2016-05-02 20:58:46
● 2017-01-31 20:51:38
○ 2020-02-29 07:33:34
○ 2026-07-24 04:34:02

○NSns-us.1and1-dns.org2016-05-02 → 2017-01-31 · 5 obs

○ 2016-01-21 20:31:26
● 2016-05-02 20:58:46
● 2017-01-31 20:51:38
○ 2020-02-29 07:33:34
○ 2026-07-24 04:34:02

○NSns-us.1and1-dns.us2016-05-02 → 2017-01-31 · 5 obs

○ 2016-01-21 20:31:26
● 2016-05-02 20:58:46
● 2017-01-31 20:51:38
○ 2020-02-29 07:33:34
○ 2026-07-24 04:34:02

○NSns29.domaincontrol.com2020-02-29 → 2020-02-29 · 4 obs

○ 2017-01-31 20:51:38
● 2020-02-29 07:33:34
○ 2026-02-14 20:03:44
○ 2026-07-24 04:34:02

○NSns29.worldnic.com2015-06-20 → 2016-01-21 · 4 obs

● 2015-06-20 14:45:00
● 2016-01-21 20:31:26
○ 2016-05-02 20:58:46
○ 2026-07-24 04:34:02

○NSns30.domaincontrol.com2020-02-29 → 2020-02-29 · 4 obs

○ 2017-01-31 20:51:38
● 2020-02-29 07:33:34
○ 2026-02-14 20:03:44
○ 2026-07-24 04:34:02

○NSns30.worldnic.com2015-06-20 → 2016-01-21 · 4 obs

● 2015-06-20 14:45:00
● 2016-01-21 20:31:26
○ 2016-05-02 20:58:46
○ 2026-07-24 04:34:02

●NSpatryk.ns.cloudflare.com2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

●MXalt1.aspmx.l.google.com2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

●MXalt2.aspmx.l.google.com2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

●MXalt3.aspmx.l.google.com2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

●MXalt4.aspmx.l.google.com2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

●MXaspmx.l.google.com2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

○MXinbound.studyguides.com.netsolmail.net2015-06-20 → 2016-01-21 · 4 obs

● 2015-06-20 14:45:00
● 2016-01-21 20:31:26
○ 2016-05-02 20:58:46
○ 2026-07-24 04:34:02

○MXmx00.1and1.com2016-05-02 → 2017-01-31 · 5 obs

○ 2016-01-21 20:31:26
● 2016-05-02 20:58:46
● 2017-01-31 20:51:38
○ 2020-02-29 07:33:34
○ 2026-07-24 04:34:02

○MXmx01.1and1.com2016-05-02 → 2017-01-31 · 5 obs

○ 2016-01-21 20:31:26
● 2016-05-02 20:58:46
● 2017-01-31 20:51:38
○ 2020-02-29 07:33:34
○ 2026-07-24 04:34:02

●A104.26.8.1112026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

●A104.26.9.1112026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

○A107.180.6.522020-02-29 → 2020-02-29 · 4 obs

○ 2017-01-31 20:51:38
● 2020-02-29 07:33:34
○ 2026-02-14 20:03:44
○ 2026-07-24 04:34:02

●A172.67.69.412026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

○A206.188.192.422015-06-20 → 2016-01-21 · 4 obs

● 2015-06-20 14:45:00
● 2016-01-21 20:31:26
○ 2016-05-02 20:58:46
○ 2026-07-24 04:34:02

●A2606:4700:20::681a:86f2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

●A2606:4700:20::681a:96f2026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

●A2606:4700:20::ac43:45292026-02-14 → 2026-07-24 · 3 obs

○ 2020-02-29 07:33:34
● 2026-02-14 20:03:44
● 2026-07-24 04:34:02

○A2607:f1c0:1000:4032:71c7:6e9f:30ba:181b2016-05-02 → 2017-01-31 · 5 obs

○ 2016-01-21 20:31:26
● 2016-05-02 20:58:46
● 2017-01-31 20:51:38
○ 2020-02-29 07:33:34
○ 2026-07-24 04:34:02

○A74.208.219.1772016-05-02 → 2017-01-31 · 5 obs

○ 2016-01-21 20:31:26
● 2016-05-02 20:58:46
● 2017-01-31 20:51:38
○ 2020-02-29 07:33:34
○ 2026-07-24 04:34:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
studyguides.com	christina.ns.cloudflare.com, patryk.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.122

NS records: christina.ns.cloudflare.com, patryk.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studyguides.com (unsigned zone)

⏱️ Timing

Total: 1481ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`104.26.8.111, 172.67.69.41...`
AAAA	3	`2606:4700:20::681a:86f, 2606:4700:20::681a:96f...`
NS	2	`christina.ns.cloudflare.com, patryk.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`google-site-verification=3QmFyhL8ROxcYfm, google-site-verification=LUKkmHRZqi7yz83...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`christina.ns.cloudflare.com dns.cloudfla`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.studyguides.com is delegated beneath studyguides.com.

IP Addresses

studyguides.com points to 6 IP addresses, including 104.26.8.111, 104.26.9.111 and 172.67.69.41, plus 3 other.

cdn.rapalloav.co.nz, www.primfeed.com, sis.southernleytestateu.edu.ph plus two other host names have IP numbers in common with studyguides.com.

Name Servers

studyguides.com is delegated to two name servers: christina.ns.cloudflare.com and patryk.ns.cloudflare.com.

The name server configuration of studyguides.com is shared with other domains, for instance premierwealthhub.info, kuroiru.co, deductionsgenius.info and two others.

There is at least partial name server overlap between studyguides.com and other domains — nicholasw.net, hd(0x706f726e)oguru2.life, kvhgl.com and two more among them.

These name servers frequently co-occur with the name servers aaron.ns.cloudflare.com and meilani.ns.cloudflare.com.

Hosts with 6 IP addresses each:

christina.ns.cloudflare.com resolves to 108.162.194.193, 162.159.38.193, 172.64.34.193 and 3 other IP addresses.

patryk.ns.cloudflare.com resolves to 108.162.195.122, 162.159.44.122, 172.64.35.122 and 3 other IP addresses.

Mail Servers

Five mail servers handle studyguides.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by studyguides.com are shared with other domains: ns500754.ns500671.ns500731.ns500671.ns500742.ns500671.ns500754.ns500731.ns500671.ns500678.ns500671.ns500671.tenderladiesbz.com, ns500699.ns500693.ns500734.ns500734.ns500693.ns500693.ns500693.ns500588.ns500588.ns500612.ns500588.ns500612.ns500588.ns500588.dtrkdll.com, ns500758.ns500758.ns500759.ns500758.ns500698.ns500698.ns500736.ns500736.ns500698.ns500735.ns500576.ns500708.trackreceptor.com and two others among them.

It is common to find these mail servers paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and aspmx3.googlemail.com, as well as two others.

Host names pointing to two IP addresses:

aspmx.l.google.com points to 172.253.115.26 and 2607:f8b0:4004:c2d::1a.

alt1.aspmx.l.google.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com points to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com points to 172.253.157.26 and 2a00:1450:400c:c23::1a.