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
		A	2803:f800:50::6ca2:c3fc
		A	2a06:98c1:50::ac40:23fc
		A	108.162.195.252
		A	162.159.44.252
		A	172.64.35.252
NS	`liv.ns.cloudflare.com`
		A	2606:4700:50::adf5:3abc
		A	2803:f800:50::6ca2:c0bc
		A	2a06:98c1:50::ac40:20bc
		A	108.162.192.188
		A	172.64.32.188
		A	173.245.58.188
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1d::1a^{Google2607:f8b0:4004::/48}
		A	172.253.62.27^{Google172.253.62.0/24}
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{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::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	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.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=2404609503

`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=1781799430

rank #14632 globally
rank #7159 in the tld
🔒 HSTS Preload (+subdomains)
📈 Tranco rank: #27,706

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
○ 2026-06-18 16:26:46

●NSlangston.ns.cloudflare.com2026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

●NSliv.ns.cloudflare.com2026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

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

● 2008-12-18 18:38:36
○ 2015-08-12 10:15:28
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

●MXalt1.aspmx.l.google.com2026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

●MXalt2.aspmx.l.google.com2026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

●MXalt3.aspmx.l.google.com2026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

●MXalt4.aspmx.l.google.com2026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

●MXaspmx.l.google.com2026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

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

● 2008-12-18 18:38:36
○ 2015-08-12 10:15:28
○ 2026-06-18 16:26:46

●A104.18.39.1192026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

●A172.64.148.1372026-02-25 → 2026-06-18 · 3 obs

○ 2020-01-25 19:39:10
● 2026-02-25 02:37:56
● 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

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

● 2008-12-18 18:38:36
○ 2015-08-12 10:15:28
○ 2026-06-18 16:26:46

○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
○ 2026-06-18 16:26:46

🔍 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: 573ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.18.39.119, 172.64.148.137`
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

Name Servers

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

Host names with 6 IP numbers:

The host name langston.ns.cloudflare.com points to: 108.162.195.252, 162.159.44.252, 172.64.35.252 and 3 other.

The host name liv.ns.cloudflare.com points to: 108.162.192.188, 172.64.32.188, 173.245.58.188 and 3 other.

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.

Host names that have two IP addresses:

The A records for aspmx.l.google.com return 172.253.62.27 and 2607:f8b0:4004:c1d::1a.

The A records for alt1.aspmx.l.google.com return 108.177.123.26 and 2800:3f0:4003:c0f::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 192.178.223.27 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.26 and 2a00:1450:400c:c23::1b.