cliffsnotes.com - dns.ninja

`cliffsnotes.com`

DNSSEC	⚠️ Not signed
A	104.18.39.119^{Cloudflare104.18.39.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.64.148.137^{🇺🇸 Cloudflare172.64.148.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`langston.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cfc^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`langston.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3fc^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`langston.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23fc^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`langston.ns.cloudflare.com`
		A	108.162.195.252^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`langston.ns.cloudflare.com`
		A	162.159.44.252^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`langston.ns.cloudflare.com`
		A	172.64.35.252^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`langston.ns.cloudflare.com`
NS	`liv.ns.cloudflare.com`
		A	2606:4700:50::adf5:3abc^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liv.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0bc^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`liv.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20bc^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`liv.ns.cloudflare.com`
		A	108.162.192.188^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liv.ns.cloudflare.com`
		A	172.64.32.188^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liv.ns.cloudflare.com`
		A	173.245.58.188^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liv.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c27::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadsk-in-f27.1e100.net`
		A	172.253.62.27^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.27^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.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	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.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	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`globalsign-domain-verification=28DB9FCEFBA2745B7F57EF614E9B8F17`
TXT	`globalsign-domain-verification=D151191065D1DFB61FF73EF164ECC37A`
TXT	`google-site-verification=iujjMUAxV_bg2LRj8PkpLpD8iSYrUDl8zEJUG91aks0`
TXT	`v=spf1 a mx include:_spf.google.com include:mail.zendesk.com include:amazonse...`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.18.39.119, 172.64.148.137
SOA	`langston.ns.cloudflare.com`dns@cloudflare.com serial=2409720110

`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=1786349754

rank #15279 globally
rank #7439 in the tld
🔒 HSTS Preload (+subdomains)
📈 Tranco rank: #27,217

Subdomains

www.cliffsnotes.com

staging.cliffsnotes.com

Same first word

cliffsnotes.com

DNS History

25 records (9 active, 16 former)

○NSjws-edcp.wiley.com2008-12-18 → 2008-12-18 · 3 obs

● 2008-12-18 18:38:36
○ 2015-08-12 10:15:28
○ 2026-08-10 08:30:16

●NSlangston.ns.cloudflare.com2026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

●NSliv.ns.cloudflare.com2026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

○NSns-1018.awsdns-63.net2020-01-25 → 2020-01-25 · 4 obs

○ 2017-02-12 02:34:46
● 2020-01-25 19:39:10
○ 2026-02-25 02:37:56
○ 2026-08-10 08:30:16

○NSns-1362.awsdns-42.org2020-01-25 → 2020-01-25 · 4 obs

○ 2017-02-12 02:34:46
● 2020-01-25 19:39:10
○ 2026-02-25 02:37:56
○ 2026-08-10 08:30:16

○NSns-1596.awsdns-07.co.uk2020-01-25 → 2020-01-25 · 4 obs

○ 2017-02-12 02:34:46
● 2020-01-25 19:39:10
○ 2026-02-25 02:37:56
○ 2026-08-10 08:30:16

○NSns-311.awsdns-38.com2020-01-25 → 2020-01-25 · 4 obs

○ 2017-02-12 02:34:46
● 2020-01-25 19:39:10
○ 2026-02-25 02:37:56
○ 2026-08-10 08:30:16

○NSns.wileypub.com2008-12-18 → 2008-12-18 · 3 obs

● 2008-12-18 18:38:36
○ 2015-08-12 10:15:28
○ 2026-08-10 08:30:16

○NSns1.hmco.com2015-08-12 → 2015-12-06 · 5 obs

○ 2008-12-18 18:38:36
● 2015-08-12 10:15:28
● 2015-12-06 23:02:38
○ 2016-03-31 00:51:02
○ 2026-08-10 08:30:16

○NSns5.hmco.com2015-08-12 → 2017-02-12 · 5 obs

○ 2008-12-18 18:38:36
● 2015-08-12 10:15:28
● 2017-02-12 02:34:46
○ 2020-01-25 19:39:10
○ 2026-08-10 08:30:16

○NSns6.hmco.com2015-08-12 → 2017-02-12 · 5 obs

○ 2008-12-18 18:38:36
● 2015-08-12 10:15:28
● 2017-02-12 02:34:46
○ 2020-01-25 19:39:10
○ 2026-08-10 08:30:16

○NSns7.hmco.com2015-08-12 → 2017-02-12 · 5 obs

○ 2008-12-18 18:38:36
● 2015-08-12 10:15:28
● 2017-02-12 02:34:46
○ 2020-01-25 19:39:10
○ 2026-08-10 08:30:16

●MXalt1.aspmx.l.google.com2026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

●MXalt2.aspmx.l.google.com2026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

●MXalt3.aspmx.l.google.com2026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

●MXalt4.aspmx.l.google.com2026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

●MXaspmx.l.google.com2026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

○MXus-smtp-inbound-1.mimecast.com2015-08-12 → 2020-01-25 · 5 obs

○ 2008-12-18 18:38:36
● 2015-08-12 10:15:28
● 2020-01-25 19:39:10
○ 2026-02-25 02:37:56
○ 2026-08-10 08:30:16

○MXus-smtp-inbound-2.mimecast.com2015-08-12 → 2020-01-25 · 5 obs

○ 2008-12-18 18:38:36
● 2015-08-12 10:15:28
● 2020-01-25 19:39:10
○ 2026-02-25 02:37:56
○ 2026-08-10 08:30:16

○MXxmail.wiley.com2008-12-18 → 2008-12-18 · 3 obs

● 2008-12-18 18:38:36
○ 2015-08-12 10:15:28
○ 2026-08-10 08:30:16

●A104.18.39.1192026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

●A172.64.148.1372026-02-25 → 2026-08-10 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-08-10 08:30:16

○A206.16.26.1262015-08-12 → 2016-07-23 · 5 obs

○ 2008-12-18 18:38:36
● 2015-08-12 10:15:28
● 2016-07-23 16:15:12
○ 2016-10-26 22:30:08
○ 2026-08-10 08:30:16

○A208.215.179.1832008-12-18 → 2008-12-18 · 3 obs

● 2008-12-18 18:38:36
○ 2015-08-12 10:15:28
○ 2026-08-10 08:30:16

○A209.235.125.892016-10-26 → 2020-01-25 · 5 obs

○ 2016-07-23 16:15:12
● 2016-10-26 22:30:08
● 2020-01-25 19:39:10
○ 2026-02-25 02:37:56
○ 2026-08-10 08:30:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cliffsnotes.com	liv.ns.cloudflare.com, langston.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.188

NS records: liv.ns.cloudflare.com, langston.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cliffsnotes.com (unsigned zone)

⏱️ Timing

Total: 179ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.64.148.137, 104.18.39.119`
NS	2	`langston.ns.cloudflare.com, liv.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	4	`globalsign-domain-verification=28DB9FCEF, globalsign-domain-verification=D15119106...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`langston.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.cliffsnotes.com and staging.cliffsnotes.com each fall under cliffsnotes.com as their parent domain.

IP Addresses

cliffsnotes.com resolves to the IP addresses 104.18.39.119 and 172.64.148.137

Two other host names, along with www.vh37648fd.com, cnsonline.co.uk and www.cnsonline.co.uk, also share IP numbers with cliffsnotes.com.

Name Servers

The NS records for cliffsnotes.com delegate to langston.ns.cloudflare.com and liv.ns.cloudflare.com.

cliffsnotes.com shares its NS records with other domains, for example pund.info, amadesign.ro, (0x736578)ycasinom.info and two others.

cliffsnotes.com partially shares its NS delegation with several other domains, including dd555.net.br, phpmysql.com.br, hokkislot.org and two others.

These name servers regularly co-occur with the name servers ivy.ns.cloudflare.com, otto.ns.cloudflare.com and simon.ns.cloudflare.com.

DNS names with 6 IP addresses:

langston.ns.cloudflare.com maps to 108.162.195.252, 162.159.44.252, 172.64.35.252 and 3 additional IP addresses.

liv.ns.cloudflare.com maps to 108.162.192.188, 172.64.32.188, 173.245.58.188 and 3 additional IP addresses.

Mail Servers

cliffsnotes.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

There is at least a partial MX overlap between cliffsnotes.com and other domains, including ns500693.ns500693.ns500699.ns500699.ns500693.ns500699.ns500588.ns500683.ns500632.ns500612.ns500632.ns500612.ns500588.ns500578.ns500110.dtrkdll.com, ns500742.ns500731.ns500742.ns500731.ns500671.ns500704.ns500678.ns500649.ns500671.ns500688.ns500291.ns500153.tenderladiesbz.com, ns500794.ns500841.ns500841.ns500795.ns500794.ns500821.ns500795.ns500794.ns500794.ns500821.ns500795.ns500795.ns500790.ns500795.lustypartnersfinder.com and two others.

alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.

Host names that have two IP addresses:

The A records for aspmx.l.google.com return 172.253.62.27 and 2607:f8b0:4004:c27::1b.

The A records for alt1.aspmx.l.google.com return 192.178.234.27 and 2800:3f0:4003:c14::1b.

The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1a.

The A records for alt3.aspmx.l.google.com return 192.178.223.26 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.27 and 2a00:1450:400c:c23::1a.