uiw.gradesfirst.com - dns.ninja

`uiw.gradesfirst.com`

DNSSEC	⚠️ Not signed
MX	`mx.sendgrid.net` ⭐
		A	3.17.120.38^{🇺🇸 Amazon3.16.0.0/14 EC2 CMH prefix}
			PTR	`ec2-3-17-120-38.us-east-2.compute.amazonaws.com`
		A	3.136.245.72^{🇺🇸 Amazon3.136.0.0/13 EC2 CMH prefix}
			PTR	`ec2-3-136-245-72.us-east-2.compute.amazonaws.com`
		A	13.216.54.185^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
			PTR	`ec2-13-216-54-185.compute-1.amazonaws.com`
		A	15.222.160.229^{🇨🇦 Amazon15.222.0.0/15 EC2 YUL prefix}
			PTR	`ec2-15-222-160-229.ca-central-1.compute.amazonaws.com`
		A	16.52.61.209^{🇺🇸 Amazon16.52.0.0/16 EC2 YUL prefix}
			PTR	`ec2-16-52-61-209.ca-central-1.compute.amazonaws.com`
		A	16.52.110.174^{🇺🇸 Amazon16.52.0.0/16 EC2 YUL prefix}
			PTR	`ec2-16-52-110-174.ca-central-1.compute.amazonaws.com`
		A	18.224.101.244^{🇺🇸 Amazon18.224.0.0/14 EC2 CMH prefix}
			PTR	`ec2-18-224-101-244.us-east-2.compute.amazonaws.com`
		A	34.198.67.24^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
			PTR	`ec2-34-198-67-24.compute-1.amazonaws.com`
		A	44.216.124.122^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-216-124-122.compute-1.amazonaws.com`
		A	44.245.249.202^{🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix}
			PTR	`ec2-44-245-249-202.us-west-2.compute.amazonaws.com`
		A	52.25.213.239^{🇺🇸 Amazon52.24.0.0/14 EC2 PDX prefix}
			PTR	`ec2-52-25-213-239.us-west-2.compute.amazonaws.com`
		A	52.37.49.26^{🇺🇸 Amazon52.36.0.0/14 EC2 PDX prefix}
			PTR	`ec2-52-37-49-26.us-west-2.compute.amazonaws.com`

`gradesfirst.com`

	DNSSEC	⚠️ Not signed
	A	99.84.41.3^{🇺🇸 Amazon99.84.40.0/21 Prod}
	A	99.84.41.67^{🇺🇸 Amazon99.84.40.0/21 Prod}
	A	99.84.41.70^{🇺🇸 Amazon99.84.40.0/21 Prod}
	A	99.84.41.100^{🇺🇸 Amazon99.84.40.0/21 Prod}
	NS	`ns-163.awsdns-20.com` ⭐
	NS	`ns-1469.awsdns-55.org`
	NS	`ns-1801.awsdns-33.co.uk`
	NS	`ns-602.awsdns-11.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
	MX	`aspmx2.googlemail.com`⁽³⁰⁾
	TXT	`v=spf1 a:o1.email.gradesfirst.com include:aspmx.googlemail.com include:sendgr...`
	SOA	`ns-163.awsdns-20.com`awsdns-hostmaster@amazon.com serial=1

Same first word

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DNS History

7 records (1 active, 6 former)

●MXmx.sendgrid.net2017-09-13 → 2026-08-09 · 2 obs

● 2017-09-13 11:59:44
● 2026-08-09 19:51:02

○A174.129.17.1422017-09-13 → 2017-09-13 · 3 obs

● 2017-09-13 11:59:44
○ 2021-10-09 01:42:06
○ 2026-08-09 19:51:02

○A3.222.91.1922021-10-09 → 2021-10-09 · 4 obs

○ 2017-09-13 11:59:44
● 2021-10-09 01:42:06
○ 2026-07-04 04:38:42
○ 2026-08-09 19:51:02

○A3.226.7.842021-10-09 → 2021-10-09 · 4 obs

○ 2017-09-13 11:59:44
● 2021-10-09 01:42:06
○ 2026-07-04 04:38:42
○ 2026-08-09 19:51:02

○A34.197.185.182021-10-09 → 2021-10-09 · 4 obs

○ 2017-09-13 11:59:44
● 2021-10-09 01:42:06
○ 2026-07-04 04:38:42
○ 2026-08-09 19:51:02

○A34.238.198.1122021-10-09 → 2021-10-09 · 4 obs

○ 2017-09-13 11:59:44
● 2021-10-09 01:42:06
○ 2026-07-04 04:38:42
○ 2026-08-09 19:51:02

○A35.172.244.2022021-10-09 → 2021-10-09 · 4 obs

○ 2017-09-13 11:59:44
● 2021-10-09 01:42:06
○ 2026-07-04 04:38:42
○ 2026-08-09 19:51:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
gradesfirst.com	ns-163.awsdns-20.com, ns-602.awsdns-11.net, ns-1801.awsdns-33.co.uk, ns-1469.awsdns-55.org	2 records

✅ Authoritative Response

Server:205.251.197.189

NS records: ns-163.awsdns-20.com, ns-602.awsdns-11.net, ns-1801.awsdns-33.co.uk, ns-1469.awsdns-55.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gradesfirst.com (unsigned zone)

⏱️ Timing

Total: 383ms | Queries: -

📄 Records

Type	Count	Sample Data
MX	1	`mx.sendgrid.net (pri: 0)`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-163.awsdns-20.com, ns-163.awsdns-20.com)

Analysis

Mail Servers

uiw.gradesfirst.com routes its mail through a single mail server, mx.sendgrid.net.

uiw.gradesfirst.com has the same mail server arrangement as a number of other domains, for example preview.im, groundfloor.co, doon-berlin.de and two more.

uiw.gradesfirst.com shares at least some of its mail servers with other domains — for example kizuna-one.jp, patientbillhelp.com, casinomaximum.online and two more.

It is common to find these mail servers paired with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 4 more.

mx.sendgrid.net directs to 12 IP numbers, including 3.17.120.38, 3.136.245.72 and 13.216.54.185, along with 9 other.