🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`schoolnotes.app`

DNSSEC	⚠️ Not signed
A	13.33.109.50^{🇺🇸 Amazon13.33.109.0/24 - Cloudfront}
		PTR	`server-13-33-109-50.bos50.r.cloudfront.net`
A	13.33.109.55^{🇺🇸 Amazon13.33.109.0/24 - Cloudfront}
A	13.33.109.61^{🇺🇸 Amazon13.33.109.0/24 - Cloudfront}
A	13.33.109.125^{🇺🇸 Amazon13.33.109.0/24 - Cloudfront}
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`
		A	2600:9000:5300:ad00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-173.awsdns-21.com`
		A	205.251.192.173^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-173.awsdns-21.com`
NS	`ns-1956.awsdns-52.co.uk`
		A	2600:9000:5307:a400::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1956.awsdns-52.co.uk`
		A	205.251.199.164^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1956.awsdns-52.co.uk`
NS	`ns-808.awsdns-37.net`
		A	2600:9000:5303:2800::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-808.awsdns-37.net`
		A	205.251.195.40^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-808.awsdns-37.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f27.1e100.net`
		A	142.251.16.26^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:4025:4403::1b^{🇮🇪 Google2a00:1450:4025::/48}
			PTR	`yuskelf-in-f27.1e100.net`
		A	192.178.228.27^{🇺🇸 Google192.178.0.0/15}
			PTR	`yuskelf-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	172.253.157.26^{🇺🇸 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

Previous names

Next names

DNS History

33 records (13 active, 20 former)

●NSns-1528.awsdns-63.org2026-09-26 → 2026-11-11 · 2 obs

● 2026-09-26 17:15:22
● 2026-11-11 19:08:56

●NSns-173.awsdns-21.com2026-09-26 → 2026-11-11 · 2 obs

● 2026-09-26 17:15:22
● 2026-11-11 19:08:56

●NSns-1956.awsdns-52.co.uk2026-09-26 → 2026-11-11 · 2 obs

● 2026-09-26 17:15:22
● 2026-11-11 19:08:56

●NSns-808.awsdns-37.net2026-09-26 → 2026-11-11 · 2 obs

● 2026-09-26 17:15:22
● 2026-11-11 19:08:56

●MXalt1.aspmx.l.google.com2026-09-26 → 2026-11-11 · 4 obs

● 2026-09-26 17:15:22
○ 2026-11-03 22:03:56
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

●MXalt2.aspmx.l.google.com2026-09-26 → 2026-11-11 · 4 obs

● 2026-09-26 17:15:22
○ 2026-11-03 22:03:56
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

●MXalt3.aspmx.l.google.com2026-09-26 → 2026-11-11 · 4 obs

● 2026-09-26 17:15:22
○ 2026-11-03 22:03:56
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

●MXalt4.aspmx.l.google.com2026-09-26 → 2026-11-11 · 4 obs

● 2026-09-26 17:15:22
○ 2026-11-03 22:03:56
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

●MXaspmx.l.google.com2026-09-26 → 2026-11-11 · 4 obs

● 2026-09-26 17:15:22
○ 2026-11-03 22:03:56
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

●A13.33.109.1252026-10-18 → 2026-11-11 · 5 obs

○ 2026-10-18 12:26:34
● 2026-10-18 16:59:48
○ 2026-11-03 12:26:24
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

●A13.33.109.502026-10-18 → 2026-11-11 · 5 obs

○ 2026-10-18 12:26:34
● 2026-10-18 16:59:48
○ 2026-11-03 12:26:24
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

●A13.33.109.552026-10-18 → 2026-11-11 · 5 obs

○ 2026-10-18 12:26:34
● 2026-10-18 16:59:48
○ 2026-11-03 12:26:24
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

●A13.33.109.612026-10-18 → 2026-11-11 · 5 obs

○ 2026-10-18 12:26:34
● 2026-10-18 16:59:48
○ 2026-11-03 12:26:24
● 2026-11-11 19:08:54
● 2026-11-11 19:08:56

○A18.164.174.1022026-10-05 → 2026-11-03 · 12 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 11:01:50
● 2026-10-08 02:08:56
○ 2026-10-16 17:34:58
● 2026-10-18 12:26:34
○ 2026-10-18 16:59:48
● 2026-11-03 12:26:24
○ 2026-11-03 22:03:56
○ 2026-11-11 19:08:56

○A18.164.174.282026-10-05 → 2026-11-03 · 12 obs

○A18.164.174.32026-10-05 → 2026-11-03 · 12 obs

○A18.164.174.752026-10-05 → 2026-11-03 · 12 obs

○A18.165.25.1252026-10-16 → 2026-10-16 · 4 obs

○ 2026-10-08 02:08:56
● 2026-10-16 17:34:58
○ 2026-10-16 20:10:40
○ 2026-11-11 19:08:56

○A18.165.25.722026-10-16 → 2026-10-16 · 4 obs

○ 2026-10-08 02:08:56
● 2026-10-16 17:34:58
○ 2026-10-16 20:10:40
○ 2026-11-11 19:08:56

○A18.165.25.852026-10-16 → 2026-10-16 · 4 obs

○ 2026-10-08 02:08:56
● 2026-10-16 17:34:58
○ 2026-10-16 20:10:40
○ 2026-11-11 19:08:56

○A18.165.25.872026-10-16 → 2026-10-16 · 4 obs

○ 2026-10-08 02:08:56
● 2026-10-16 17:34:58
○ 2026-10-16 20:10:40
○ 2026-11-11 19:08:56

○A216.137.52.282026-09-28 → 2026-10-16 · 8 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
● 2026-10-16 20:10:40
○ 2026-10-18 12:26:34
○ 2026-11-11 19:08:56

○A216.137.52.292026-09-28 → 2026-10-16 · 8 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
● 2026-10-16 20:10:40
○ 2026-10-18 12:26:34
○ 2026-11-11 19:08:56

○A216.137.52.332026-09-28 → 2026-10-16 · 8 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
● 2026-10-16 20:10:40
○ 2026-10-18 12:26:34
○ 2026-11-11 19:08:56

○A216.137.52.672026-09-28 → 2026-10-16 · 8 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
● 2026-10-16 20:10:40
○ 2026-10-18 12:26:34
○ 2026-11-11 19:08:56

○A3.166.192.362026-10-06 → 2026-10-06 · 4 obs

○ 2026-10-05 11:50:02
● 2026-10-06 11:01:50
○ 2026-10-08 02:08:56
○ 2026-11-11 19:08:56

○A3.166.192.482026-10-06 → 2026-10-06 · 4 obs

○ 2026-10-05 11:50:02
● 2026-10-06 11:01:50
○ 2026-10-08 02:08:56
○ 2026-11-11 19:08:56

○A3.166.192.802026-10-06 → 2026-10-06 · 4 obs

○ 2026-10-05 11:50:02
● 2026-10-06 11:01:50
○ 2026-10-08 02:08:56
○ 2026-11-11 19:08:56

○A3.166.192.912026-10-06 → 2026-10-06 · 4 obs

○ 2026-10-05 11:50:02
● 2026-10-06 11:01:50
○ 2026-10-08 02:08:56
○ 2026-11-11 19:08:56

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

● 2026-09-26 17:15:22
○ 2026-09-28 11:24:18
○ 2026-11-11 19:08:56

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

● 2026-09-26 17:15:22
○ 2026-09-28 11:24:18
○ 2026-11-11 19:08:56

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

● 2026-09-26 17:15:22
○ 2026-09-28 11:24:18
○ 2026-11-11 19:08:56

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

● 2026-09-26 17:15:22
○ 2026-09-28 11:24:18
○ 2026-11-11 19:08:56

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:205.251.199.164

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for schoolnotes.app (unsigned zone)

⏱️ Timing

Total: 1145ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`13.33.109.55, 13.33.109.125...`
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.`

Analysis

IP Addresses

schoolnotes.app resolves to four IP addresses: 13.33.109.50, 13.33.109.55, 13.33.109.61 and 13.33.109.125.

Additional host names — d2q82dypel2d4p.amplifyapp.com, flashmatuk.wetransfer.com, nskq0q.launches.appsflyersdk.com and two others — share IP numbers with schoolnotes.app.

Name Servers

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

schoolnotes.app partially shares its NS delegation with several other domains, including jonetu-ceo.com, couponbirds.io, d2boa21ka7mtae.cloudfront.net and two others.

These name servers regularly co-occur with the name servers ns-335.awsdns-41.com, ns-874.awsdns-45.net and ns-1674.awsdns-17.co.uk.

ns-173.awsdns-21.com, ns-808.awsdns-37.net, ns-1528.awsdns-63.org and ns-1956.awsdns-52.co.uk each carry two IP addresses. ns-173.awsdns-21.com has 205.251.192.173 and 2600:9000:5300:ad00::1; ns-808.awsdns-37.net has 205.251.195.40 and 2600:9000:5303:2800::1; ns-1528.awsdns-63.org has 205.251.197.248 and 2600:9000:5305:f800::1; ns-1956.awsdns-52.co.uk has 205.251.199.164 and 2600:9000:5307:a400::1.

Mail Servers

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

schoolnotes.app shares mail servers — at least in part — with other domains, including mulherescorporativas.com.br, plcomunicacion.com, taglyzer.com and two others.

These mail servers are frequently paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com resolves to two addresses: 142.251.16.26 and 2607:f8b0:4004:c17::1b.

alt1.aspmx.l.google.com resolves to two addresses: 192.178.228.27 and 2a00:1450:4025:4403::1b.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1b.

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