research4u.com - robtex.com
research4u.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=1771291435 | ||||||
Same first word
research4u.info |
research4u.com |
DNS History
16 records (4 active, 12 former)
○NSns1.namebrightdns.com2018-01-29 → 2018-01-29 · 4 obs
● 2018-01-29 07:44:06
○ 2026-02-16 06:40:20
○ 2026-03-23 08:02:10
○NSns1.parkingcrew.net2016-05-02 → 2017-01-02 · 5 obs
● 2016-05-02 20:42:46
● 2017-01-02 18:16:16
○ 2018-01-29 07:44:06
○ 2026-03-23 08:02:10
○NSns1.sedoparking.com2015-07-12 → 2016-02-09 · 4 obs
● 2016-02-09 07:29:26
○ 2016-05-02 20:42:46
○ 2026-03-23 08:02:10
○NSns2.namebrightdns.com2018-01-29 → 2018-01-29 · 4 obs
● 2018-01-29 07:44:06
○ 2026-02-16 06:40:20
○ 2026-03-23 08:02:10
○NSns2.parkingcrew.net2016-05-02 → 2017-01-02 · 5 obs
● 2016-05-02 20:42:46
● 2017-01-02 18:16:16
○ 2018-01-29 07:44:06
○ 2026-03-23 08:02:10
○NSns2.sedoparking.com2015-07-12 → 2016-02-09 · 4 obs
● 2016-02-09 07:29:26
○ 2016-05-02 20:42:46
○ 2026-03-23 08:02:10
●NSns39.domaincontrol.com2026-02-16 → 2026-03-23 · 3 obs
● 2026-02-16 06:40:20
● 2026-03-23 08:02:10
●NSns40.domaincontrol.com2026-02-16 → 2026-03-23 · 3 obs
● 2026-02-16 06:40:20
● 2026-03-23 08:02:10
○MXmail.h-email.net2016-05-02 → 2017-01-02 · 5 obs
● 2016-05-02 20:42:46
● 2017-01-02 18:16:16
○ 2018-01-29 07:44:06
○ 2026-03-23 08:02:10
○MXmail.nickstel.com2015-07-12 → 2016-02-09 · 4 obs
● 2016-02-09 07:29:26
○ 2016-05-02 20:42:46
○ 2026-03-23 08:02:10
●MXresearch4u-com.mail.protection.outlook.com2026-02-16 → 2026-03-23 · 3 obs
● 2026-02-16 06:40:20
● 2026-03-23 08:02:10
○A185.53.178.82017-01-02 → 2017-01-02 · 4 obs
● 2017-01-02 18:16:16
○ 2018-01-29 07:44:06
○ 2026-03-23 08:02:10
○A185.53.179.82016-05-02 → 2016-05-02 · 4 obs
● 2016-05-02 20:42:46
○ 2017-01-02 18:16:16
○ 2026-03-23 08:02:10
○A72.52.4.1192015-07-12 → 2016-02-09 · 4 obs
● 2016-02-09 07:29:26
○ 2016-05-02 20:42:46
○ 2026-03-23 08:02:10
●A92.205.171.1692026-02-16 → 2026-03-23 · 3 obs
● 2026-02-16 06:40:20
● 2026-03-23 08:02:10
○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2018-01-29 → 2026-02-16 · 3 obs
● 2026-02-16 06:40:20
○ 2026-03-23 08:02:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| research4u.com | ns39.domaincontrol.com, ns40.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.109.20
NS records: ns39.domaincontrol.com, ns40.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for research4u.com (unsigned zone)
⏱️ Timing
Total: 54ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 92.205.171.169 |
| NS | 2 | ns39.domaincontrol.com, ns40.domaincontrol.com |
| MX | 1 | research4u-com.mail.protection.outlook.c |
| TXT | 2 | NETORGFT17437050.onmicrosoft.com, v=spf1 include:secureserver.net -all |
| SOA | 1 | ns39.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns39.domaincontrol.com, ns39.domaincontrol.com, ns40.domaincontrol.com...)
Analysis
IP Addresses
research4u.com resolves to a single IP: 92.205.171.169.
Other host names, for instance numeric-arts.de, servay.eu, zap-net.de, technolegno.com and hbauer.at share IP numbers with research4u.com.
Name Servers
research4u.com has two name servers: ns39.domaincontrol.com and ns40.domaincontrol.com.
research4u.com shares the same name server setup as other domains, for example inmontessori.com, pacs-labs.com, micrometl.us, emulate.healthcare and motorcyclust.com.
Host names with two IP numbers:
ns39.domaincontrol.com points to: 2603:5:21d1::14 and 97.74.109.20; ns40.domaincontrol.com points to: 2603:5:22d1::14 and 173.201.77.20.
Mail Servers
research4u.com is handled by a single mail server, research4u-com.mail.protection.outlook.com.
Host research4u-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::4, 2a01:111:f403:ca04::a, 2a01:111:f403:ca09::7, 2a01:111:f403:ca09::20, 52.101.68.3, 52.101.68.15, 52.101.68.32 and 52.101.68.36.