`trk.b.express.com`

CNAME	`sendgrid.net`
DNSSEC	⚠️ Not signed
A	3.79.130.38^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
		PTR	`ec2-3-79-130-38.eu-central-1.compute.amazonaws.com`
A	18.158.228.216^{🇩🇪 Amazon18.156.0.0/14 EC2 FRA prefix}
A	46.51.200.92^{🇮🇪 Amazon46.51.192.0/20 EU AWS Dublin}
A	54.216.50.79^{🇮🇪 Amazon54.216.0.0/15 EC2 DUB 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	`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	`l8bqrl0r33q4joeb79q8uuj009`
TXT	`6ifgg010qg6mquqt5lodun8qds`
TXT	`yahoo-verification-key=TrufSXS+dfythA5AIMbLUnkX38rjr1HR93gbqHUSY74=`
TXT	`i52uk89q4nfe1mpgqv5qsmsj3j.`
TXT	`cemmvnbghpsb500d7c19e35fgm`
TXT	`utjqqjvmeadmlva41ectre9gd3`
TXT	`5m3r13nvilmq8tgf5foh6ki1uv`
TXT	`mailru-verification: 2e3995fa8a7d00e0`
TXT	`p8bnb2lp424dkl3c4io1aemiei`
SOA	`ns10.dnsmadeeasy.com`dns@dnsmadeeasy.com serial=2011298423

`b.express.com`

	DNSSEC	⚠️ Not signed
	MX	`mx.sendgrid.net` ⭐
	TXT	`google-site-verification=3CeD6-XvajGYiVXDzfsYVD1aRMflhcbbLyF0seoxzco`

⚠️ On DNS blocklist: ultimate
WOT: SAFE (92/100)
WOT: SAFE (96/100)

Same first word

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ktr.jp

DNS History

1 record (1 active, 0 former)

●CNAMEsendgrid.net2018-11-06 → 2026-07-04 · 2 obs

● 2018-11-06 03:44:56
● 2026-07-04 21:02:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
express.com	use1.akam.net, eur2.akam.net, ns1-114.akam.net, ns1-147.akam.net...	-

✅ Authoritative Response

Server:193.108.91.147

NS records: use1.akam.net, eur2.akam.net, ns1-114.akam.net, ns1-147.akam.net, usw6.akam.net, eur5.akam.net, eur6.akam.net, use5.akam.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for express.com (unsigned zone)

⏱️ Timing

Total: 453ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`sendgrid.net`

Analysis

IP Addresses

trk.b.express.com points to the four IP addresses 3.79.130.38, 18.158.228.216, 46.51.200.92 and 54.216.50.79.

Two other host names, along with ec2-54-216-50-79.eu-west-1.compute.amazonaws.com, sendgrid.net and ec2-18-158-228-216.eu-central-1.compute.amazonaws.com, also share IP numbers with trk.b.express.com.

Name Servers

DNS for trk.b.express.com is handled by 6 name servers: ns10.dnsmadeeasy.com, ns11.dnsmadeeasy.com, ns12.dnsmadeeasy.com and 3 others.

The name servers of trk.b.express.com overlap at least partially with those of other domains — among them motores24h.pt, me-vis.com, cjvr.com and two more.

These name servers commonly co-occur with the name servers ns13.dnsmadeeasy.com, ns14.dnsmadeeasy.com, ns15.dnsmadeeasy.com and ns20.digicertdns.com.

Host names that have two IP addresses:

ns10.dnsmadeeasy.com has two IP addresses: 208.94.148.4 and 2600:1800:10::1.

ns11.dnsmadeeasy.com has two IP addresses: 208.80.124.4 and 2600:1801:11::1.

ns12.dnsmadeeasy.com has two IP addresses: 208.80.126.4 and 2600:1802:12::1.

ns13.dnsmadeeasy.com has two IP addresses: 208.80.125.4 and 2600:1801:13::1.

ns14.dnsmadeeasy.com has two IP addresses: 208.80.127.4 and 2600:1802:14::1.

ns15.dnsmadeeasy.com has two IP addresses: 208.94.149.4 and 2600:1800:15::1.

Mail Servers

trk.b.express.com is served by two mail servers, mx2.sendgrid.net and mx.sendgrid.net.

Among the domains sharing a mail server setup with trk.b.express.com are *.mayfield.realoms.com, ksgovjobs.com, etitan.hu and two others.

There is at least a partial MX overlap between trk.b.express.com and other domains, including lb.ecs.eu-cs-prod.kayako.com, gmelius.io, emails.eat.ch and two others.

These mail servers tend to appear in combination with mail servers mx3.sendgrid.net, mx4.sendgrid.net, mx5.sendgrid.net and 6 others.

DNS names with 12 IP addresses:

mx.sendgrid.net has IP addresses 3.17.120.38, 3.136.245.72 and 13.216.54.185, plus 9 other.

DNS names with 9 IP addresses:

mx2.sendgrid.net has IP addresses 3.17.120.38, 3.136.245.72 and 13.216.54.185, plus 6 other.

Host names pointing to 3.17.120.38 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

Host names pointing to 3.136.245.72 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

Host names pointing to 13.216.54.185 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

Host names pointing to 18.224.101.244 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

Host names pointing to 34.198.67.24 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

Host names pointing to 44.216.124.122 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

Host names pointing to 44.245.249.202 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

Host names pointing to 52.25.213.239 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

Host names pointing to 52.37.49.26 IP addresses: mx.sendgrid.net and mx2.sendgrid.net.

trk.b.express.com - robtex.com

trk.b.express.com

b.express.com