schoolnotes.app - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`schoolnotes.app`

DNSSEC	⚠️ Not signed
A	18.164.174.3
A	18.164.174.28
A	18.164.174.75
A	18.164.174.102
NS	`ns-1528.awsdns-63.org` ⭐
		A	2600:9000:5305:f800::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1528.awsdns-63.org`
		A	205.251.197.248^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1528.awsdns-63.org`
NS	`ns-173.awsdns-21.com`
NS	`ns-1956.awsdns-52.co.uk`
NS	`ns-808.awsdns-37.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c25::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadtq-in-f27.1e100.net`
		A	172.253.115.27^{🇺🇸 Google172.253.115.0/24}
			PTR	`bg-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 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::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.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}
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=NeFpapIWvQy0VZsQkXdRYDKxA3XKfA-ipzd8utOb0G0`
SOA	`ns-1528.awsdns-63.org`awsdns-hostmaster@amazon.com serial=1

`app`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=101427

🔒 HSTS Preload (+subdomains)

Same first word

Similar names

DNS History

21 records (13 active, 8 former)

●NSns-1528.awsdns-63.org2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●NSns-173.awsdns-21.com2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●NSns-1956.awsdns-52.co.uk2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●NSns-808.awsdns-37.net2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●MXalt1.aspmx.l.google.com2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●MXalt2.aspmx.l.google.com2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●MXalt3.aspmx.l.google.com2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●MXalt4.aspmx.l.google.com2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●MXaspmx.l.google.com2026-09-26 → 2026-10-06 · 2 obs

● 2026-09-26 17:15:22
● 2026-10-06 11:01:52

●A18.164.174.1022026-10-05 → 2026-10-06 · 5 obs

○ 2026-09-28 11:24:18
● 2026-10-05 02:00:28
○ 2026-10-05 02:36:50
● 2026-10-05 11:50:02
● 2026-10-06 11:01:52

●A18.164.174.282026-10-05 → 2026-10-06 · 5 obs

○ 2026-09-28 11:24:18
● 2026-10-05 02:00:28
○ 2026-10-05 02:36:50
● 2026-10-05 11:50:02
● 2026-10-06 11:01:52

●A18.164.174.32026-10-05 → 2026-10-06 · 5 obs

○ 2026-09-28 11:24:18
● 2026-10-05 02:00:28
○ 2026-10-05 02:36:50
● 2026-10-05 11:50:02
● 2026-10-06 11:01:52

●A18.164.174.752026-10-05 → 2026-10-06 · 5 obs

○ 2026-09-28 11:24:18
● 2026-10-05 02:00:28
○ 2026-10-05 02:36:50
● 2026-10-05 11:50:02
● 2026-10-06 11:01:52

○A216.137.52.282026-09-28 → 2026-10-05 · 6 obs

○ 2026-09-26 17:15:22
● 2026-09-28 11:24:18
○ 2026-10-05 02:00:28
● 2026-10-05 02:36:50
○ 2026-10-05 11:50:02
○ 2026-10-06 11:01:52

○A216.137.52.292026-09-28 → 2026-10-05 · 6 obs

○ 2026-09-26 17:15:22
● 2026-09-28 11:24:18
○ 2026-10-05 02:00:28
● 2026-10-05 02:36:50
○ 2026-10-05 11:50:02
○ 2026-10-06 11:01:52

○A216.137.52.332026-09-28 → 2026-10-05 · 6 obs

○ 2026-09-26 17:15:22
● 2026-09-28 11:24:18
○ 2026-10-05 02:00:28
● 2026-10-05 02:36:50
○ 2026-10-05 11:50:02
○ 2026-10-06 11:01:52

○A216.137.52.672026-09-28 → 2026-10-05 · 6 obs

○ 2026-09-26 17:15:22
● 2026-09-28 11:24:18
○ 2026-10-05 02:00:28
● 2026-10-05 02:36:50
○ 2026-10-05 11:50:02
○ 2026-10-06 11:01:52

○A54.230.201.1152026-09-26 → 2026-09-26 · 3 obs

● 2026-09-26 17:15:22
○ 2026-09-28 11:24:18
○ 2026-10-06 11:01:52

○A54.230.201.512026-09-26 → 2026-09-26 · 3 obs

● 2026-09-26 17:15:22
○ 2026-09-28 11:24:18
○ 2026-10-06 11:01:52

○A54.230.201.652026-09-26 → 2026-09-26 · 3 obs

● 2026-09-26 17:15:22
○ 2026-09-28 11:24:18
○ 2026-10-06 11:01:52

○A54.230.201.732026-09-26 → 2026-09-26 · 3 obs

● 2026-09-26 17:15:22
○ 2026-09-28 11:24:18
○ 2026-10-06 11:01:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...	10 records
schoolnotes.app	ns-1528.awsdns-63.org, ns-808.awsdns-37.net, ns-173.awsdns-21.com, ns-1956.awsdns-52.co.uk	-

✅ Authoritative Response

Server:205.251.197.248

NS records: ns-1528.awsdns-63.org, ns-808.awsdns-37.net, ns-173.awsdns-21.com, ns-1956.awsdns-52.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for schoolnotes.app (unsigned zone)

⏱️ Timing

Total: 1160ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.166.192.91, 3.166.192.36...`
NS	4	`ns-1528.awsdns-63.org, ns-173.awsdns-21.com...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	1	`google-site-verification=NeFpapIWvQy0VZs`
SOA	1	`ns-1528.awsdns-63.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld2.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...)

Analysis

IP Addresses

schoolnotes.app directs to four IP numbers, which are 18.164.174.3, 18.164.174.28, 18.164.174.75 and 18.164.174.102.

Name Servers

The authoritative name servers for schoolnotes.app are ns-173.awsdns-21.com, ns-808.awsdns-37.net, ns-1528.awsdns-63.org and ns-1956.awsdns-52.co.uk.

Hostnames that resolve to two IP addresses:

ns-1528.awsdns-63.org directs traffic to 205.251.197.248 and 2600:9000:5305:f800::1.

Mail Servers

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

Hostnames that resolve to two IP addresses:

aspmx.l.google.com directs traffic to 172.253.115.27 and 2607:f8b0:4004:c25::1b.

alt1.aspmx.l.google.com directs traffic to 192.178.234.27 and 2800:3f0:4003:c14::1a.

alt2.aspmx.l.google.com directs traffic to 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com directs traffic to 192.178.223.26 and 2a00:1450:4009:c0f::1b.

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