fei.com - robtex.com

fei.com

DNSSEC⚠️ Not signed
A216.151.18.55🇺🇸 UNSPECIFIED216.151.0.0/19 Opus Interactive Netblock
PTR216.151.18.55.fasternetwork.com
NSns3.level3.net
A216.136.95.12🇺🇸 AS3549216.136.0.0/17
PTRns3.level3.net
NSpdns1.ultradns.net
A2001:502:f3ff::1🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar
PTRpdns1.ultradns.net
A204.74.108.1🇺🇸 MAINT-ID-12008204.74.108.0/24 Neustar
PTRpdns1.ultradns.net
NSpdns2.ultradns.net
A2610:a1:1014::1🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar
PTRpdns2.ultradns.net
A204.74.109.1🇺🇸 MAINT-ID-12008204.74.109.0/24 Neustar
PTRpdns2.ultradns.net
NSpdns3.ultradns.org
A2610:a1:1015::1🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar
PTRpdns3.ultradns.org
A199.7.68.1🇺🇸 MAINT-ID-12008199.7.68.0/24 Neustar
PTRpdns3.ultradns.org
NSpdns4.ultradns.org
A2001:502:4612::1🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar
PTRpdns4.ultradns.org
A199.7.69.1🇺🇸 MAINT-ID-12008199.7.69.0/24 Neustar
PTRpdns4.ultradns.org
NSpdns5.ultradns.info
A2610:a1:1016::1🇺🇸 MAINT-ID-120082610:a1:1016::/48 Neustar
PTRpdns5.ultradns.info
A204.74.114.1🇺🇸 MAINT-ID-12008204.74.114.0/24 Neustar
PTRpdns5.ultradns.info
NSpdns6.ultradns.co.uk
A2610:a1:1017::1🇺🇸 MAINT-ID-120082610:a1:1017::/48 Neustar
PTRpdns6.ultradns.co.uk
A204.74.115.1🇺🇸 MAINT-ID-12008204.74.115.0/24 Neustar
PTRpdns6.ultradns.co.uk
MXmxa-002a2102.gslb.pphosted.com
A208.86.201.75🇺🇸 Proofpoint208.86.201.0/24 Inc.
PTRmx0b-002a2102.pphosted.com
MXmxb-002a2102.gslb.pphosted.com
A208.86.201.75🇺🇸 Proofpoint208.86.201.0/24 Inc.
PTRmx0b-002a2102.pphosted.com
TXTMS=ms26052182
TXTMS=ms47857068
TXTzscaler-verification-209720-04082025-6tqcos54
TXTzscaler-verification-209720-912025-AmI3SWWp2e
TXTdJ/+0Nh6lhby7WqweUzDxR0Ej1Zefm7PrW9nQJ9mKmQybOrJhZrz2sAkHpOi1qNgL2NJD87tDB9ow...
TXTv=spf1 mx a include:mktomail.com include:spf.protection.outlook.com ip4:148....
SOAns3.level3.netdnsteam@level3.com.fei.com 2018-04-14 #7

com

rank #204724 globally
rank #90268 in the tld
WOT: SAFE (84/100)
📈 Tranco rank: #200,461

Subdomains

Same first word

Similar names

DNS History

16 records (10 active, 6 former)

20162017201820192020202120222023202420252026NSns3.level3.netpdns1.ultradns.netpdns2.ultradns.netpdns3.ultradns.orgpdns4.ultradns.orgpdns5.ultradns.infopdns6.ultradns.co.ukipdnstool-02.dnvr.twtelecom.netns1.twtelecom.netns2.twtelecom.netns4.level3.netMXmxa-002a2102.gslb.pphosted.commxb-002a2102.gslb.pphosted.comsmtp-nl1.feico.comsmtp.feico.comA216.151.18.55
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
○ 2026-06-19 23:26:54
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
○ 2026-06-19 23:26:54
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
○ 2026-06-19 23:26:54
NSns3.level3.net2016-12-25 → 2026-06-19 · 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
● 2026-06-19 23:26:54
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
○ 2026-06-19 23:26:54
NSpdns1.ultradns.net2018-09-05 → 2026-06-19 · 3 obs
○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
NSpdns2.ultradns.net2018-09-05 → 2026-06-19 · 3 obs
○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
NSpdns3.ultradns.org2018-09-05 → 2026-06-19 · 3 obs
○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
NSpdns4.ultradns.org2018-09-05 → 2026-06-19 · 3 obs
○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
NSpdns5.ultradns.info2018-09-05 → 2026-06-19 · 3 obs
○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
NSpdns6.ultradns.co.uk2018-09-05 → 2026-06-19 · 3 obs
○ 2018-08-13 20:19:32
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
MXmxa-002a2102.gslb.pphosted.com2018-08-07 → 2026-06-19 · 3 obs
○ 2018-06-14 17:42:26
● 2018-08-07 12:16:06
● 2026-06-19 23:26:54
MXmxb-002a2102.gslb.pphosted.com2018-08-07 → 2026-06-19 · 3 obs
○ 2018-06-14 17:42:26
● 2018-08-07 12:16:06
● 2026-06-19 23:26:54
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
○ 2026-06-19 23:26:54
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
○ 2026-06-19 23:26:54
A216.151.18.552015-08-30 → 2026-06-19 · 2 obs
● 2015-08-30 09:06:36
● 2026-06-19 23:26:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
fei.compdns3.ultradns.org, pdns4.ultradns.org, pdns1.ultradns.net, pdns2.ultradns.net...-

✅ Authoritative Response

Server:204.74.108.1

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: 1717ms | Queries: -

📄 Records

TypeCountSample Data
A1216.151.18.55
NS6pdns1.ultradns.net, pdns2.ultradns.net...
MX2mxa-002a2102.gslb.pphosted.com (pri: 10), mxb-002a2102.gslb.pphosted.com (pri: 10)
TXT6MS=ms26052182, MS=ms47857068...
SOA1ns3.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 has exactly one IP address — 216.151.18.55.

cryoelectronmicroscopy.com, feico.com, cryo-electronmicroscopy.com plus two other host names have IP numbers in common with fei.com.

Name Servers

fei.com delegates authority to 7 name servers: pdns5.ultradns.info, ns3.level3.net, pdns1.ultradns.net plus 4 other.

At least some of fei.com's name servers are shared with other domains, for example pcrint.net, all-luxury-las-vegas-hotels.com, expidia.my 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.

Host names pointing to two IP addresses:

pdns5.ultradns.info directs traffic to 204.74.114.1 and 2610:a1:1016::1.

pdns1.ultradns.net directs traffic to 204.74.108.1 and 2001:502:f3ff::1.

pdns2.ultradns.net directs traffic to 204.74.109.1 and 2610:a1:1014::1.

pdns3.ultradns.org directs traffic to 199.7.68.1 and 2610:a1:1015::1.

pdns4.ultradns.org directs traffic to 199.7.69.1 and 2001:502:4612::1.

pdns6.ultradns.co.uk directs traffic to 204.74.115.1 and 2610:a1:1017::1.

Host names resolving to a single IP address:

ns3.level3.net has the IP address 216.136.95.12.

Mail Servers

fei.com uses two mail servers, mxa-002a2102.gslb.pphosted.com and mxb-002a2102.gslb.pphosted.com.

The mail server setup of fei.com matches that of other domains such as bac.nl, globalaes.com, corrona.org and two others.

At least some of the mail servers used by fei.com are shared with other domains: linkagebio.com, thermohybaid.de, madison.ppdi.com and two others among them.

mxa-002a2102.gslb.pphosted.com resolves to 208.86.201.75; mxb-002a2102.gslb.pphosted.com resolves to the same IP address, 208.86.201.75.

Both mxa-002a2102.gslb.pphosted.com and mxb-002a2102.gslb.pphosted.com resolve to 208.86.201.75 IP addresses each.