mail.core4u.com - robtex.com
mail.core4u.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 64.190.63.222🇩🇪 SEDO64.190.62.0/23 -NET2-PI | ||||||
| NS | ns1.sedoparking.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 3.130.216.63🇺🇸 Amazon3.130.0.0/16 EC2 CMH prefix | ||||||
| PTR | ec2-3-130-216-63.us-east-2.compute.amazonaws.com | ||||||
| A | 91.195.241.8🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| NS | ns2.sedoparking.com ⚠️ Not in parent delegation | ||||||
| A | 34.211.188.210🇺🇸 Amazon34.208.0.0/12 EC2 PDX prefix | ||||||
| PTR | ec2-34-211-188-210.us-west-2.compute.amazonaws.com | ||||||
| A | 91.195.240.8🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| MX | localhost ⭐ | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.sedoparking.comhostmaster@sedo.de 2018-05-16 #1 | ||||||
core4u.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 64.190.63.222🇩🇪 SEDO64.190.62.0/23 -NET2-PI | ||||||
| NS | ns1.sedoparking.com ⭐ | ||||||
| NS | ns2.sedoparking.com | ||||||
| MX | localhost ⭐ | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.sedoparking.comhostmaster@sedo.de 2018-05-16 #1 | ||||||
Previously MX for
Same first word
Similar names
DNS History
6 records (4 active, 2 former)
●NSns1.sedoparking.com2026-04-23 → 2026-04-23 · 1 obs
●NSns2.sedoparking.com2026-04-23 → 2026-04-23 · 1 obs
●MXlocalhost2026-04-23 → 2026-04-23 · 1 obs
○A202.31.186.552008-03-14 → 2016-04-28 · 3 obs
● 2016-04-28 15:55:10
○ 2026-04-23 23:51:18
●A64.190.63.2222026-04-23 → 2026-04-23 · 2 obs
● 2026-04-23 23:51:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| core4u.com | ns1.sedoparking.com, ns2.sedoparking.com | 2 records |
✅ Authoritative Response
Server:91.195.240.8
NS records: ns1.sedoparking.com, ns2.sedoparking.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for core4u.com (unsigned zone)
⏱️ Timing
Total: 312ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 64.190.63.222 |
| NS | 2 | ns2.sedoparking.com, ns1.sedoparking.com |
| MX | 1 | localhost (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.sedoparking.com hostmaster.sedo.de |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.sedoparking.com, ns2.sedoparking.com)
Analysis
IP Addresses
mail.core4u.com resolves to one IP number: 64.190.63.222.
Other host names, for instance futuretech-engineering.com, africanewsmagazine.com, driveguide.de, inshokuten.org and 4data.ir share IP numbers with mail.core4u.com.
Name Servers
mail.core4u.com's delegation uses two name servers: ns1.sedoparking.com and ns2.sedoparking.com.
mail.core4u.com uses the same name server setup as other domains, such as diskdoctors.de, windscreen.co.uk, ultradome.de, tsvk.de and spielhaus.ch.
Host names with two IPs:
ns1.sedoparking.com points to 3.130.216.63 and 91.195.241.8
ns2.sedoparking.com points to 34.211.188.210 and 91.195.240.8
Mail Servers
A single mail server handles mail.core4u.com, localhost.
mail.core4u.com shares the same mail server setup as other domains, for instance client.allocity.com, reitschule.net, umx.ca, preistipps.com and mail.seminare-trainings.de.