fei.com - robtex.com
fei.com
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.netnstld@verisign-grs.com serial=1781911005 | ||||||
rank #90268 in the tld
WOT: SAFE (84/100)
📈 Tranco rank: #200,461
Subdomains
mail.fei.com |
rapid.fei.com |
rapidvpn-eng-us.fei.com |
rapidvpn-eng-jp.fei.com |
www.fei.com |
store.fei.com |
rapidvpn-eng-use.fei.com |
rapidvpn-eng-nl.fei.com |
investor.fei.com |
Same first word
Similar names
DNS History
16 records (10 active, 6 former)
○NSipdnstool-02.dnvr.twtelecom.net2015-08-30 → 2017-04-26 · 4 obs
● 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
● 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
● 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
● 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
● 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
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
●NSpdns2.ultradns.net2018-09-05 → 2026-06-19 · 3 obs
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
●NSpdns3.ultradns.org2018-09-05 → 2026-06-19 · 3 obs
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
●NSpdns4.ultradns.org2018-09-05 → 2026-06-19 · 3 obs
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
●NSpdns5.ultradns.info2018-09-05 → 2026-06-19 · 3 obs
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
●NSpdns6.ultradns.co.uk2018-09-05 → 2026-06-19 · 3 obs
● 2018-09-05 15:49:40
● 2026-06-19 23:26:54
●MXmxa-002a2102.gslb.pphosted.com2018-08-07 → 2026-06-19 · 3 obs
● 2018-08-07 12:16:06
● 2026-06-19 23:26:54
●MXmxb-002a2102.gslb.pphosted.com2018-08-07 → 2026-06-19 · 3 obs
● 2018-08-07 12:16:06
● 2026-06-19 23:26:54
○MXsmtp-nl1.feico.com2015-08-30 → 2018-06-14 · 4 obs
● 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
● 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
● 2026-06-19 23:26:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| fei.com | pdns3.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
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.151.18.55 |
| NS | 6 | pdns1.ultradns.net, pdns2.ultradns.net... |
| MX | 2 | mxa-002a2102.gslb.pphosted.com (pri: 10), mxb-002a2102.gslb.pphosted.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 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.