`email.gradesfirst.com`

CNAME	`sendgrid.net`
DNSSEC	⚠️ Not signed
A	44.228.207.192^{🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix}
		PTR	`ec2-44-228-207-192.us-west-2.compute.amazonaws.com`
A	44.245.147.253^{🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix}
A	52.39.173.225^{🇺🇸 Amazon52.36.0.0/14 EC2 PDX prefix}
NS	`ns10.dnsmadeeasy.com` ⭐
		A	2600:1800:10::1^{🇺🇸 Tiggee2600:1800:10::/48 DNS Made Easy anycast network}
			PTR	`ns10.dnsmadeeasy.com`
		A	208.94.148.4^{🇺🇸 Tiggee208.94.148.0/24 DNS Made Easy anycast network}
			PTR	`ns10.dnsmadeeasy.com`
NS	`ns11.dnsmadeeasy.com`
		A	2600:1801:11::1^{🇺🇸 Tiggee2600:1801:11::/48 DNS Made Easy anycast network}
			PTR	`ns11.dnsmadeeasy.com`
		A	208.80.124.4^{🇺🇸 Tiggee208.80.124.0/24 DNS Made Easy anycast network}
			PTR	`ns11.dnsmadeeasy.com`
NS	`ns12.dnsmadeeasy.com`
		A	2600:1802:12::1^{🇺🇸 Tiggee2600:1802:12::/48 DNS Made Easy anycast network}
			PTR	`ns12.dnsmadeeasy.com`
		A	208.80.126.4^{🇺🇸 Tiggee208.80.126.0/24 DNS Made Easy anycast network}
			PTR	`ns12.dnsmadeeasy.com`
NS	`ns13.dnsmadeeasy.com`
		A	2600:1801:13::1^{🇺🇸 Tiggee2600:1801:13::/48 DNS Made Easy anycast network}
			PTR	`ns13.dnsmadeeasy.com`
		A	208.80.125.4^{🇺🇸 Tiggee208.80.125.0/24 DNS Made Easy anycast network}
			PTR	`ns13.dnsmadeeasy.com`
NS	`ns14.dnsmadeeasy.com`
		A	2600:1802:14::1^{🇺🇸 Tiggee2600:1802:14::/48 DNS Made Easy anycast network}
			PTR	`ns14.dnsmadeeasy.com`
		A	208.80.127.4^{🇺🇸 Tiggee208.80.127.0/24 DNS Made Easy anycast network}
			PTR	`ns14.dnsmadeeasy.com`
NS	`ns15.dnsmadeeasy.com`
		A	2600:1800:15::1^{🇺🇸 Tiggee2600:1800:15::/48 DNS Made Easy anycast network}
			PTR	`ns15.dnsmadeeasy.com`
		A	208.94.149.4^{🇺🇸 Tiggee208.94.149.0/24 DNS Made Easy anycast network}
			PTR	`ns15.dnsmadeeasy.com`
MX	`mx2.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	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`
MX	`mx.sendgrid.net`⁽²⁰⁾
		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`
TXT	`google-site-verification=1UEf8ey-RibUjY6gnpqIZFjWNqMknmeyeHz1zTmj0DE`
TXT	`i52uk89q4nfe1mpgqv5qsmsj3j.`
TXT	`l8bqrl0r33q4joeb79q8uuj009`
TXT	`p8bnb2lp424dkl3c4io1aemiei`
TXT	`v=spf1 ip4:167.89.0.0/17 ip4:208.117.48.0/20 ip4:50.31.32.0/19 ip4:198.37.144...`
TXT	`6ifgg010qg6mquqt5lodun8qds`
TXT	`utjqqjvmeadmlva41ectre9gd3`
TXT	`yahoo-verification-key=TrufSXS+dfythA5AIMbLUnkX38rjr1HR93gbqHUSY74=`
TXT	`5m3r13nvilmq8tgf5foh6ki1uv`
TXT	`cemmvnbghpsb500d7c19e35fgm`
TXT	`mailru-verification: 2e3995fa8a7d00e0`
SOA	`ns10.dnsmadeeasy.com`dns@dnsmadeeasy.com serial=2011297499

`gradesfirst.com`

	DNSSEC	⚠️ Not signed
	A	18.161.21.8^{🇺🇸 Amazon18.161.16.0/21}
	A	18.161.21.14^{🇺🇸 Amazon18.161.16.0/21}
	A	18.161.21.16^{🇺🇸 Amazon18.161.16.0/21}
	A	18.161.21.90^{🇺🇸 Amazon18.161.16.0/21}
	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

📈 Tranco rank: #537,007

Subdomains

o2.email.gradesfirst.com

Same first word

email.today

email.s3.amazonaws.com

email.company

email.kz

email.delivery

email.lv

email.vu

email.lt

email.ky

email.gallery

email.li

email.biz

email.wf

email.my

email.io

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email.sk

email.com.do

email.co.mz

email.alsace

email.tax

email.ch

email.tw

email.be

email.ru

email.idv.tw

email.fi

email.world

email.kinghost.net

email.express

email.co.tz

email.yt

email.nl

email.mx

email.football

email.hk

email.com.de

email.hosting

email.vision

email.exchange

email.sh

email.cc

email.org

email.gov.ps

email.ma

email.tc

email.us.in

email.dn.ua

email.vg

email.ws

email.im

email.net.nz

email.cn

email.mba

email.com.tw

email.dj

email.dk

email.de

email.sarl

email.com.cn

email.su

email.ne.jp

email.sakura.ne.jp

email.co.bw

email

email.gov.tt

email.guru

email.org.ua

email.ke

email.kiev.ua

email.gb.net

email.in.ua

email.builders

email.agency

email.schule

email.uz

email.nu

email.red

email.security

email.properties

email.pm

email.nz

email.me

email.vc

email.cool

email.com.au

email.do

email.ad

email.spb.ru

email.tv

email.pizza

email.cr

email.co.at

email.gd

email.io.in

email.is

email.report

email.gs

email.pt

email.cz

email.org.za

email.com.pt

email.co

email.bz

email.app

email.zone

email.se

email.myshopify.com

email.ca

email.link

email.za.bz

email.contact

email.fo

email.tg

email.community

email.gifts

email.co.kr

email.new

email.it

email.gg

email.at

email.az

email.fr

email.fm

email.ro

email.cloudflare.net

email.abbott

email.net.au

email.no

email.jp

email.plus

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DNS History

1 record (1 active, 0 former)

●CNAMEsendgrid.net2026-03-10 → 2026-04-24 · 2 obs

● 2026-03-10 10:38:24
● 2026-04-24 11:39:06

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:205.251.197.189

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gradesfirst.com (unsigned zone)

⏱️ Timing

Total: 1594ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`sendgrid.net`

📌 Glue Records Collected

Total: 2

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

Analysis

Hierarchy

email.gradesfirst.com is a parent of o2.email.gradesfirst.com.

IP Addresses

Three IP numbers are pointed to by email.gradesfirst.com: 44.228.207.192, 44.245.147.253 and 52.39.173.225.

Other host names, for instance ec2-52-39-173-225.us-west-2.compute.amazonaws.com, ec2-44-228-207-192.us-west-2.compute.amazonaws.com, sendgrid.net and ec2-44-245-147-253.us-west-2.compute.amazonaws.com share IP numbers with email.gradesfirst.com.

Name Servers

email.gradesfirst.com is delegated to six name servers: ns10.dnsmadeeasy.com, ns11.dnsmadeeasy.com, ns12.dnsmadeeasy.com, ns13.dnsmadeeasy.com, ns14.dnsmadeeasy.com and ns15.dnsmadeeasy.com.

email.gradesfirst.com at least partially shares name servers with other domains, for instance finditatthemall.com, 4dconcepts.ca, canyonhighcowboys.com, nutrition.org and hoganas.it.

These name servers are commonly used with ns20.digicertdns.com, ns21.digicertdns.com, ns22.digicertdns.com, ns23.digicertdns.net, ns24.digicertdns.net and ns25.digicertdns.net.

Host names with two IPs:

ns10.dnsmadeeasy.com points to 2600:1800:10::1 and 208.94.148.4.

ns11.dnsmadeeasy.com points to 2600:1801:11::1 and 208.80.124.4.

ns12.dnsmadeeasy.com points to 2600:1802:12::1 and 208.80.126.4.

ns13.dnsmadeeasy.com points to 2600:1801:13::1 and 208.80.125.4.

ns14.dnsmadeeasy.com points to 2600:1802:14::1 and 208.80.127.4.

ns15.dnsmadeeasy.com points to 2600:1800:15::1 and 208.94.149.4.

Mail Servers

email.gradesfirst.com is handled by two mail servers: mx2.sendgrid.net and mx.sendgrid.net.

email.gradesfirst.com uses the same mail server configuration as other domains, such as ksgovjobs.com, etitan.hu, trustpilotservice.com, pipedrivemail.com and keith.email.

email.gradesfirst.com shares mail servers with other domains at least in part, for instance u2006862.wl113.sendgrid.net, email.kunversion.com, notification.hotpads.com, u6560613.wl114.sendgrid.net and webooker.eu.

These mail servers are frequently used with mx3.sendgrid.net, mx4.sendgrid.net, mx5.sendgrid.net, mxa.freshdesk.com, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

Host names with twelve IP numbers: mx.sendgrid.net points to: 3.17.120.38, 3.136.245.72, 13.216.54.185, 15.222.160.229, 16.52.61.209, 16.52.110.174, 18.224.101.244, 34.198.67.24, 44.216.124.122, 44.245.249.202, 52.25.213.239 and 52.37.49.26.

Host names with nine IP numbers: mx2.sendgrid.net points to: 3.17.120.38, 3.136.245.72, 13.216.54.185, 18.224.101.244, 34.198.67.24, 44.216.124.122, 44.245.249.202, 52.25.213.239 and 52.37.49.26.

Host names that point to 3.17.120.38: mx.sendgrid.net and mx2.sendgrid.net.

Host names that point to 3.136.245.72: mx.sendgrid.net and mx2.sendgrid.net.

Host names that point to 13.216.54.185: mx.sendgrid.net and mx2.sendgrid.net.

Host names that point to 18.224.101.244: mx.sendgrid.net and mx2.sendgrid.net.

Host names that point to 34.198.67.24: mx.sendgrid.net and mx2.sendgrid.net.

Host names that point to 44.216.124.122: mx.sendgrid.net and mx2.sendgrid.net.

Host names that point to 44.245.249.202: mx.sendgrid.net and mx2.sendgrid.net.

Host names that point to 52.25.213.239: mx.sendgrid.net and mx2.sendgrid.net.

Host names that point to 52.37.49.26: mx.sendgrid.net and mx2.sendgrid.net.

email.gradesfirst.com - robtex.com