core4-tech.com - robtex.com
core4-tech.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=1776003327 | ||||||
Same first word
core4-tech.com |
DNS History
12 records (12 active, 0 former)
●NSdax.ns.cloudflare.com2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●NSsavanna.ns.cloudflare.com2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●MXalt1.aspmx.l.google.com2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●MXalt2.aspmx.l.google.com2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●MXalt3.aspmx.l.google.com2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●MXalt4.aspmx.l.google.com2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●MXaspmx.l.google.com2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●MXsmtp.google.com2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●A104.21.20.1542026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●A172.67.193.422026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●A2606:4700:3034::ac43:c12a2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
●A2606:4700:3036::6815:149a2026-04-03 → 2026-04-12 · 2 obs
● 2026-04-12 14:16:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| core4-tech.com | savanna.ns.cloudflare.com, dax.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.194.136
NS records: savanna.ns.cloudflare.com, dax.ns.cloudflare.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 216ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.20.154, 172.67.193.42 |
| AAAA | 2 | 2606:4700:3036::6815:149a, 2606:4700:3034::ac43:c12a |
| NS | 2 | dax.ns.cloudflare.com, savanna.ns.cloudflare.com |
| MX | 6 | aspmx.l.google.com (pri: 1), smtp.google.com (pri: 1)... |
| TXT | 1 | v=spf1 include:_spf.google.com -all |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | dax.ns.cloudflare.com dns.cloudflare.com |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (savanna.ns.cloudflare.com, savanna.ns.cloudflare.com, savanna.ns.cloudflare.com...)
Analysis
IP Addresses
core4-tech.com maps to four IP numbers: 2606:4700:3034::ac43:c12a, 2606:4700:3036::6815:149a, 104.21.20.154 and 172.67.193.42.
other host names include valleywrecker.com, www.lejean.nl, nutansaurashtra.com, msschoolcounselor.com and volunteerforeducation.org; they share IP numbers with core4-tech.com.
Name Servers
Two name servers dax.ns.cloudflare.com and savanna.ns.cloudflare.com handle the delegation for core4-tech.com.
core4-tech.com shares the same name server setup as other domains, for instance germin.org, playtoon.com, globalalbanians.org, findhm.com and ahmayou.com.
core4-tech.com at least partially shares name servers with other domains, for instance infobuilder.ph, proslim.in, pa-dumai.go.id, electrichk.com and didretire.com.
These name servers are commonly used with aryanna.ns.cloudflare.com and indie.ns.cloudflare.com.
Six IP addresses per host:
dax.ns.cloudflare.com points to 2606:4700:58::a29f:2c85, 2803:f800:50::6ca2:c385, 2a06:98c1:50::ac40:2385, 108.162.195.133, 162.159.44.133 and 172.64.35.133; savanna.ns.cloudflare.com points to 2606:4700:50::a29f:2688, 2803:f800:50::6ca2:c288, 2a06:98c1:50::ac40:2288, 108.162.194.136, 162.159.38.136 and 172.64.34.136
Mail Servers
Six mail servers handle core4-tech.com: smtp.google.com, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
core4-tech.com shares at least partially some mail servers with other domains, for instance visaops.net, scalerapid.com, ns500821.ns500821.ns500841.ns500794.ns500841.ns500794.ns500821.ns500821.ns500795.ns500794.ns500821.ns500821.ns500790.ns500795.lustypartnersfinder.com, tomatoprojects.com and projectpit.com.
Mail servers frequently appear alongside aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Host names with four IP numbers:
The host name smtp.google.com points to: 2a00:1450:4009:c0f::1a; 2a00:1450:4009:c0f::1b; 192.178.223.26 and 192.178.223.27.
Host names with two IP numbers:
The host name aspmx.l.google.com points to: 2607:f8b0:4004:c06::1b and 172.253.139.26.
The host name alt1.aspmx.l.google.com points to: 2607:f8b0:4023:2801::1b and 192.178.128.27.
The host name alt2.aspmx.l.google.com points to: 2a00:1450:4013:c1e::1a and 192.178.213.27.
The host name alt3.aspmx.l.google.com points to: 2a00:1450:4009:c0f::1a and 192.178.223.27.
The host name alt4.aspmx.l.google.com points to: 2a00:1450:400c:c00::1a and 173.194.76.26.
Host names that point to 2a00:1450:4009:c0f::1a: smtp.google.com and alt3.aspmx.l.google.com.
Host names that point to 192.178.223.27: smtp.google.com and alt3.aspmx.l.google.com.