`isi.csan.goodnotes.com`

DNSSEC	⚠️ Not signed
A	3.11.39.160^{🇬🇧 Amazon3.8.0.0/14 EC2 LHR prefix}
		PTR	`ec2-3-11-39-160.eu-west-2.compute.amazonaws.com`
A	18.169.107.189^{🇬🇧 Amazon18.168.0.0/14 EC2 LHR prefix}
A	18.170.124.63^{🇬🇧 Amazon18.168.0.0/14 EC2 LHR prefix}
TXT	`heritage=external-dns,external-dns/owner=external-dns-public,external-dns/res...`

`csan.goodnotes.com`

	DNSSEC	⚠️ Not signed
	NS	`ns-799.awsdns-35.net` ⭐
	NS	`ns-1513.awsdns-61.org`
	NS	`ns-1610.awsdns-09.co.uk`
	NS	`ns-361.awsdns-45.com`
	SOA	`ns-799.awsdns-35.net`awsdns-hostmaster@amazon.com serial=1

Same first word

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isi.eu

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isi.la

isi.id

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isi.academy

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isi.no

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isi.or.id

isi.us

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Similar names

iis.hu

sii.edu.bi

iis.us

iis.com.br

iis.hr

iis.org

sii.bz.it

sii.hu

sii.de

sii.nl

sii.fi

iis.me

iis.im

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iis.uz

sii.ac.cn

sii.co.jp

iis.in

sii.com.mx

iis.jp

iis.kz

sii.ca

sii.bm

sii.im

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iis.lu

iis.company

sii.org.il

iis.mobi

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sii.cc

sii.com.cn

iis.fi

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iis.co.za

sii.eu

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iis.info

iis.edu.lk

sii.org.uk

iis.se

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iis.ge

sii.vn

iis.net.vn

iis.nu

iis.agency

iis.lv

sii.at

iis.org.br

iis.es

DNS History

3 records (3 active, 0 former)

●A18.169.107.1892026-02-28 → 2026-03-31 · 2 obs

● 2026-02-28 12:54:28
● 2026-03-31 05:20:06

●A18.170.124.632026-02-28 → 2026-03-31 · 2 obs

● 2026-02-28 12:54:28
● 2026-03-31 05:20:06

●A3.11.39.1602026-02-28 → 2026-03-31 · 2 obs

● 2026-02-28 12:54:28
● 2026-03-31 05:20:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, a.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net...	-
goodnotes.com	ns-99.awsdns-12.com, ns-748.awsdns-29.net, ns-1759.awsdns-27.co.uk, ns-1467.awsdns-55.org	1 record
csan.goodnotes.com	ns-1513.awsdns-61.org, ns-1610.awsdns-09.co.uk, ns-361.awsdns-45.com, ns-799.awsdns-35.net	-

✅ Authoritative Response

Server:205.251.197.233

NS records: ns-1513.awsdns-61.org, ns-1610.awsdns-09.co.uk, ns-361.awsdns-45.com, ns-799.awsdns-35.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for goodnotes.com (unsigned zone)

⏱️ Timing

Total: 428ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`18.170.124.63, 18.169.107.189...`
TXT	1	`heritage=external-dns,external-dns/owner`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-99.awsdns-12.com)

Analysis

IP Addresses

isi.csan.goodnotes.com points to three IPs: 3.11.39.160, 18.169.107.189 and 18.170.124.63.

Other host names, for instance ec2-18-170-124-63.eu-west-2.compute.amazonaws.com, share IP numbers with isi.csan.goodnotes.com.

isi.csan.goodnotes.com - robtex.com