fei.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`fei.com`

DNSSEC	⚠️ Not signed
A	216.151.18.55^{🇺🇸 UNSPECIFIED216.151.0.0/19 Opus Interactive Netblock}
		PTR	`216.151.18.55.fasternetwork.com`
NS	`ns3.level3.net` ⭐
		A	216.136.95.12^{🇺🇸 AS3549216.136.0.0/17}
			PTR	`ns3.level3.net`
NS	`pdns1.ultradns.net`
		A	2001:502:f3ff::1^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns1.ultradns.net`
		A	204.74.108.1^{🇺🇸 MAINT-ID-12008204.74.108.0/24 Neustar}
			PTR	`pdns1.ultradns.net`
NS	`pdns2.ultradns.net`
		A	2610:a1:1014::1^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns2.ultradns.net`
		A	204.74.109.1^{🇺🇸 MAINT-ID-12008204.74.109.0/24 Neustar}
			PTR	`pdns2.ultradns.net`
NS	`pdns3.ultradns.org`
		A	2610:a1:1015::1^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns3.ultradns.org`
		A	199.7.68.1^{🇺🇸 MAINT-ID-12008199.7.68.0/24 Neustar}
			PTR	`pdns3.ultradns.org`
NS	`pdns4.ultradns.org`
		A	2001:502:4612::1^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns4.ultradns.org`
		A	199.7.69.1^{🇺🇸 MAINT-ID-12008199.7.69.0/24 Neustar}
			PTR	`pdns4.ultradns.org`
NS	`pdns5.ultradns.info`
		A	2610:a1:1016::1^{🇺🇸 MAINT-ID-120082610:a1:1016::/48 Neustar}
			PTR	`pdns5.ultradns.info`
		A	204.74.114.1^{🇺🇸 MAINT-ID-12008204.74.114.0/24 Neustar}
			PTR	`pdns5.ultradns.info`
NS	`pdns6.ultradns.co.uk`
		A	2610:a1:1017::1^{🇺🇸 MAINT-ID-120082610:a1:1017::/48 Neustar}
			PTR	`pdns6.ultradns.co.uk`
		A	204.74.115.1^{🇺🇸 MAINT-ID-12008204.74.115.0/24 Neustar}
			PTR	`pdns6.ultradns.co.uk`
MX	`ppmxa.thermofisher.com` ⭐
		A	208.86.201.75^{🇺🇸 Proofpoint208.86.201.0/24 Inc.}
			PTR	`mx0b-002a2102.pphosted.com`
MX	`ppmxb.thermofisher.com` ⭐
		A	148.163.148.140^{🇺🇸 Proofpoint148.163.148.0/22}
			PTR	`mx0a-002a2102.pphosted.com`
TXT	`MS=ms26052182`
TXT	`MS=ms47857068`
TXT	`zscaler-verification-209720-04082025-6tqcos54`
TXT	`zscaler-verification-209720-912025-AmI3SWWp2e`
TXT	`dJ/+0Nh6lhby7WqweUzDxR0Ej1Zefm7PrW9nQJ9mKmQybOrJhZrz2sAkHpOi1qNgL2NJD87tDB9ow...`
TXT	`v=spf1 mx a include:mktomail.com include:spf.protection.outlook.com ip4:148....`
SOA	`ns3.level3.net`dnsteam@level3.com.fei.com 2018-04-14 #9

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1786972299

rank #182311 globally
rank #73938 in the tld
WOT: SAFE (84/100)
📈 Tranco rank: #193,687

Subdomains

mail.fei.com

rapid.fei.com

rapidvpn-eng-us.fei.com

rapidvpn-eng-jp.fei.com

www.fei.com

rapidvpn-eng-use.fei.com

rapidvpn-eng-nl.fei.com

investor.fei.com

Same first word

fei.biz

fei.com

fei.st

fei.kr

fei.cn

fei.ro

fei.bz

fei.cc

fei.io

fei.ac.ir

fei.in

fei.dog

fei.edu.br

fei.im

fei.edu.uy

fei.dk

fei.us

fei.su

fei.org.eg

fei.fr

fei.com.tw

fei.se

fei.ru

fei.cz

fei.nyc

fei.jp

fei.org.ar

fei.co.jp

fei.gift

fei.sg

fei.dev

fei.de

fei.be

fei.at

fei.it

fei.com.sg

fei.money

fei.com.pk

fei.my

fei.info

fei.is

fei.lv

fei.fi

fei.sk

fei.edu

fei.cl

fei.edu.co

fei.international

fei.ltd

fei.(0x787878)

fei.ca

fei.solutions

fei.com.br

fei.no

fei.li

fei.lt

fei.co.za

fei.org

fei.org.br

fei.or.kr

fei.co.nz

fei.run

fei.asia

Similar names

ief.org

eif.com

efi.cn

fie.org.es

eif.cz

ife.travel

efi.bz

ife.pl

efi.cz

efi.com.br

eif.com.fj

ief.de

eif.be

ief.org.ua

ife.ie

ife.com.br

ief.com.ph

efi.ee

ife.es

ife.com.vn

efi.hu

ife.mobi

eif.at

efi.vn

fie.is

ife.org.au

fie.us

fie.at

efi.ch

ief.hr

ief.com.tr

eif.in

eif.com.hk

ief.se

ief.es

efi.no

eif.gov.sa

ife.cl

eif.jp

ife.ninja

ife.net

ief.nl

fie.es

efi.eu.com

ief.co.kr

ife.at

ife.co.jp

efi.fr

ife.de

efi.am

efi.fi

eif.fi

ife.it

ife.co.za

ief.co.in

efi.me

efi.by

efi.kr

eif.com.cn

fie.com.tw

efi.asia

ife.me

efi.com

ife.org.mx

efi.nu

ief.ch

ife.institute

ife.ro

ief.eu

ife.co.uk

eif.org.uk

eif.info

efi.us

ief.com.br

efi.co.uk

ife.com.tr

efi.dk

efi.ca

DNS History

18 records (10 active, 8 former)

○NSipdnstool-02.dnvr.twtelecom.net2015-08-30 → 2017-04-26 · 4 obs

● 2015-08-30 09:06:36
● 2017-04-26 07:53:00
○ 2017-06-09 08:11:10
○ 2026-08-17 13:26:58

○NSns1.twtelecom.net2015-08-30 → 2017-04-26 · 4 obs

● 2015-08-30 09:06:36
● 2017-04-26 07:53:00
○ 2017-06-09 08:11:10
○ 2026-08-17 13:26:58

○NSns2.twtelecom.net2015-08-30 → 2017-04-26 · 4 obs

● 2015-08-30 09:06:36
● 2017-04-26 07:53:00
○ 2017-06-09 08:11:10
○ 2026-08-17 13:26:58

●NSns3.level3.net2016-12-25 → 2026-08-17 · 6 obs

○ 2015-08-30 09:06:36
● 2016-12-25 17:08:18
● 2018-08-13 20:19:32
○ 2018-09-05 15:49:40
● 2020-11-09 13:48:34
● 2026-08-17 13:26:58

○NSns4.level3.net2016-12-25 → 2018-08-13 · 5 obs

○ 2015-08-30 09:06:36
● 2016-12-25 17:08:18
● 2018-08-13 20:19:32
○ 2018-09-05 15:49:40
○ 2026-08-17 13:26:58

●NSpdns1.ultradns.net2018-09-05 → 2026-08-17 · 3 obs

○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-08-17 13:26:58

●NSpdns2.ultradns.net2018-09-05 → 2026-08-17 · 3 obs

○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-08-17 13:26:58

●NSpdns3.ultradns.org2018-09-05 → 2026-08-17 · 3 obs

○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-08-17 13:26:58

●NSpdns4.ultradns.org2018-09-05 → 2026-08-17 · 3 obs

○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-08-17 13:26:58

●NSpdns5.ultradns.info2018-09-05 → 2026-08-17 · 3 obs

○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-08-17 13:26:58

●NSpdns6.ultradns.co.uk2018-09-05 → 2026-08-17 · 3 obs

○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-08-17 13:26:58

○MXmxa-002a2102.gslb.pphosted.com2018-08-07 → 2020-11-09 · 5 obs

○ 2018-06-14 17:42:26
● 2018-08-07 12:16:06
● 2020-11-09 13:48:34
○ 2026-08-17 13:26:56
○ 2026-08-17 13:26:58

○MXmxb-002a2102.gslb.pphosted.com2018-08-07 → 2020-11-09 · 5 obs

○ 2018-06-14 17:42:26
● 2018-08-07 12:16:06
● 2020-11-09 13:48:34
○ 2026-08-17 13:26:56
○ 2026-08-17 13:26:58

●MXppmxa.thermofisher.com2026-08-17 → 2026-08-17 · 3 obs

○ 2020-11-09 13:48:34
● 2026-08-17 13:26:56
● 2026-08-17 13:26:58

●MXppmxb.thermofisher.com2026-08-17 → 2026-08-17 · 3 obs

○ 2020-11-09 13:48:34
● 2026-08-17 13:26:56
● 2026-08-17 13:26:58

○MXsmtp-nl1.feico.com2015-08-30 → 2018-06-14 · 4 obs

● 2015-08-30 09:06:36
● 2018-06-14 17:42:26
○ 2018-08-07 12:16:06
○ 2026-08-17 13:26:58

○MXsmtp.feico.com2015-08-30 → 2018-06-14 · 4 obs

● 2015-08-30 09:06:36
● 2018-06-14 17:42:26
○ 2018-08-07 12:16:06
○ 2026-08-17 13:26:58

●A216.151.18.552015-08-30 → 2026-08-17 · 2 obs

● 2015-08-30 09:06:36
● 2026-08-17 13:26:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net, j.gtld-servers.net...	-
fei.com	pdns3.ultradns.org, pdns4.ultradns.org, pdns1.ultradns.net, pdns2.ultradns.net...	-

✅ Authoritative Response

Server:204.74.109.1

NS records: pdns3.ultradns.org, pdns4.ultradns.org, pdns1.ultradns.net, pdns2.ultradns.net, pdns5.ultradns.info, pdns6.ultradns.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fei.com (unsigned zone)

⏱️ Timing

Total: 588ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`216.151.18.55`
NS	6	`pdns1.ultradns.net, pdns2.ultradns.net...`
MX	2	`ppmxa.thermofisher.com (pri: 10), ppmxb.thermofisher.com (pri: 10)`
TXT	6	`MS=ms26052182, MS=ms47857068...`
SOA	1	`ns3.level3.net dnsteam.level3.com.fei.co`

Analysis

Hierarchy

The host names mail.fei.com, rapid.fei.com, rapidvpn-eng-us.fei.com, rapidvpn-eng-jp.fei.com and www.fei.com — among a few others — fall under the parent domain fei.com.

IP Addresses

fei.com resolves to one IP address: 216.151.18.55.

cryoelectronmicroscopy.com, feico.com, cryo-electronmicroscopy.com and two other host names share IP numbers with fei.com.

Name Servers

fei.com carries NS records listing 7 name servers — pdns5.ultradns.info, ns3.level3.net, pdns1.ultradns.net and 4 others.

At least some of fei.com's name servers are shared with other domains, for example dupont-chn.com, pcrint.net, all-luxury-las-vegas-hotels.com and two more.

These name servers tend to co-occur with pdns3.ultradns.org, pdns2.ultradns.net, pdns4.ultradns.org and 7 other name servers in the same DNS delegations.

Hostnames that resolve to two IP addresses:

The A records for pdns5.ultradns.info return 204.74.114.1 and 2610:a1:1016::1.

The A records for pdns1.ultradns.net return 204.74.108.1 and 2001:502:f3ff::1.

The A records for pdns2.ultradns.net return 204.74.109.1 and 2610:a1:1014::1.

The A records for pdns3.ultradns.org return 199.7.68.1 and 2610:a1:1015::1.

The A records for pdns4.ultradns.org return 199.7.69.1 and 2001:502:4612::1.

The A records for pdns6.ultradns.co.uk return 204.74.115.1 and 2610:a1:1017::1.

Hosts with just one IP address:

ns3.level3.net resolves to the IP address 216.136.95.12.

Mail Servers

Mail for fei.com is handled by two mail servers — ppmxa.thermofisher.com and ppmxb.thermofisher.com.

fei.com, invitrogen.com and patheon.com all share the same mail server setup.

Each of ppmxa.thermofisher.com and ppmxb.thermofisher.com has one IP address: ppmxa.thermofisher.com uses 208.86.201.75 and ppmxb.thermofisher.com uses 148.163.148.140.