`mail.knowledgeblue.com`

	CNAME	`traff-https.hugedomains.com`
	CNAME	`hdl-prd-https-0699149ba9be518e.elb.us-east-1.amazonaws.com`
	DNSSEC	⚠️ Not signed
	A	2600:1f18:4ae:c605:dd5d:b838:5816:d7fb^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
	A	2600:1f18:4ae:c606:78d4:4260:db4e:aeee^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
	A	13.223.25.84^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
	A	54.243.117.197^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}

`knowledgeblue.com`

	DNSSEC	⚠️ Not signed
	A	2600:1f18:4ae:c605:dd5d:b838:5816:d7fb^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
	A	2600:1f18:4ae:c606:78d4:4260:db4e:aeee^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
	A	13.223.25.84^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
	A	54.243.117.197^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
	NS	`ns1.namebrightdns.com` ⭐
	NS	`nsg1.namebrightdns.com`
	NS	`nsg2.namebrightdns.com`
	TXT	`v=spf1 -all`
	TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
	SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-06-27 #1

Same first word

mail.com.mk

mail.ap.gov.br

mail.dp.ua

mail.myjino.ru

mail.space

mail.net.ph

mail.rr.gov.br

mail.read-books.org

mail.ilovecollege.info

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mail.ma

mail.mr

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mail.hashbang.sh

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mail.freedesktop.org

mail.direct

mail.yandex

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mail.gov.mz

mail.gov.ph

mail.veterinaire.fr

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mail.dnsalias.com

mail.com.tr

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mail.vpndns.net

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mail.ac.id

mail.nu

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mail.ddns.net

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mail.qualifioapp.com

mail.photography

mail.net.au

mail.storage

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mail.online

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DNS History

9 records (7 active, 2 former)

●NSnsg1.namebrightdns.com2026-02-15 → 2026-06-27 · 2 obs

● 2026-02-15 16:03:16
● 2026-06-27 07:48:36

●NSnsg2.namebrightdns.com2026-02-15 → 2026-06-27 · 2 obs

● 2026-02-15 16:03:16
● 2026-06-27 07:48:36

●A13.223.25.842026-02-15 → 2026-06-27 · 3 obs

○ 2016-06-24 10:36:22
● 2026-02-15 16:03:16
● 2026-06-27 07:48:36

○A185.53.177.302016-06-24 → 2016-06-24 · 3 obs

● 2016-06-24 10:36:22
○ 2026-02-15 16:03:16
○ 2026-06-27 07:48:36

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-02-15 → 2026-06-27 · 3 obs

○ 2016-06-24 10:36:22
● 2026-02-15 16:03:16
● 2026-06-27 07:48:36

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-02-15 → 2026-06-27 · 3 obs

○ 2016-06-24 10:36:22
● 2026-02-15 16:03:16
● 2026-06-27 07:48:36

●A54.243.117.1972026-02-15 → 2026-06-27 · 3 obs

○ 2016-06-24 10:36:22
● 2026-02-15 16:03:16
● 2026-06-27 07:48:36

○CNAME773147.parkingcrew.net2016-06-24 → 2016-06-24 · 3 obs

● 2016-06-24 10:36:22
○ 2026-02-15 16:03:16
○ 2026-06-27 07:48:36

●CNAMEtraff-https.hugedomains.com2026-02-15 → 2026-06-27 · 3 obs

○ 2016-06-24 10:36:22
● 2026-02-15 16:03:16
● 2026-06-27 07:48:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net...	-
knowledgeblue.com	nsg1.namebrightdns.com, nsg2.namebrightdns.com	12 records

✅ Authoritative Response

Server:18.232.139.44

NS records: nsg1.namebrightdns.com, nsg2.namebrightdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowledgeblue.com (unsigned zone)

⏱️ Timing

Total: 227ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`13.223.25.84, 54.243.117.197`
AAAA	2	`2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee`
NS	2	`nsg2.namebrightdns.com, nsg1.namebrightdns.com`
CNAME	1	`traff-https.hugedomains.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (nsg1.namebrightdns.com, nsg1.namebrightdns.com, nsg1.namebrightdns.com...)

Analysis

IP Addresses

mail.knowledgeblue.com directs to four IP numbers, which are 13.223.25.84, 54.243.117.197, 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb and 2600:1f18:4ae:c606:78d4:4260:db4e:aeee.

Two other host names, along with garmingpsnavigator.storeblogs.com, 4cf42.jsdcoffee.com and rryu.com, also share IP numbers with mail.knowledgeblue.com.

mail.knowledgeblue.com - dns.ninja