heicourse.com - robtex.com
heicourse.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=1776791147 | ||||||
Same first word
heicourse.com |
Similar names
DNS History
11 records (11 active, 0 former)
●NSdamon.ns.cloudflare.com2026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●NSsasha.ns.cloudflare.com2026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●MXalt1.aspmx.l.google.com2026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●MXalt2.aspmx.l.google.com2026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●MXalt3.aspmx.l.google.com2026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●MXalt4.aspmx.l.google.com2026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●MXaspmx.l.google.com2026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●A104.21.54.832026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●A172.67.136.2512026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●A2606:4700:3031::ac43:88fb2026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
●A2606:4700:3033::6815:36532026-04-13 → 2026-04-21 · 2 obs
● 2026-04-21 17:13:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net... | - |
| heicourse.com | damon.ns.cloudflare.com, sasha.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.193.96
NS records: damon.ns.cloudflare.com, sasha.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for heicourse.com (unsigned zone)
⏱️ Timing
Total: 372ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.54.83, 172.67.136.251 |
| AAAA | 2 | 2606:4700:3031::ac43:88fb, 2606:4700:3033::6815:3653 |
| NS | 2 | damon.ns.cloudflare.com, sasha.ns.cloudflare.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 2 | google-site-verification=TzvMAUJ3bRBMXbj, v=spf1 include:spf.efwd.registrar-server |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | damon.ns.cloudflare.com dns.cloudflare.c |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (damon.ns.cloudflare.com, damon.ns.cloudflare.com, damon.ns.cloudflare.com...)
Analysis
IP Addresses
heicourse.com resolves to four IP numbers: 2606:4700:3031::ac43:88fb, 2606:4700:3033::6815:3653, 104.21.54.83 and 172.67.136.251.
other host names for instance allegrolokalnie.r92.rest, bkn.eleven59.dev, allegrolokalnie.oferta-83262662.click, coldfusion.cloud and www.aryup.com share IP numbers with heicourse.com.
Name Servers
heicourse.com is delegated to two name servers: damon.ns.cloudflare.com and sasha.ns.cloudflare.com.
heicourse.com shares the same name server setup as other domains, for example kakaocourse.com, lezede.com, cybertools.co.il, 65.6.185.in-addr.arpa and totozon.com.
heicourse.com at least partially shares name servers with other domains, for instance hnbqls.com, 66google.com, br-proxy.com, liwb-defender.pro and doitsjob.com.
These name servers are often used with nile.ns.cloudflare.com and susan.ns.cloudflare.com.
Host names with six IP numbers:
damon.ns.cloudflare.com points to: 2606:4700:58::adf5:3b60, 2803:f800:50::6ca2:c160, 2a06:98c1:50::ac40:2160, 108.162.193.96, 172.64.33.96 and 173.245.59.96; sasha.ns.cloudflare.com points to: 2606:4700:50::a29f:2645, 2803:f800:50::6ca2:c245, 2a06:98c1:50::ac40:2245, 108.162.194.69, 162.159.38.69 and 172.64.34.69.
Mail Servers
heicourse.com is handled by five mail servers: 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.
heicourse.com shares mail servers with other domains at least partially, including matsumoto.ch, ns500758.ns500758.ns500759.ns500735.ns500735.ns500736.ns500735.ns500735.ns500735.ns500698.ns500708.ns500576.ns500686.ns500576.ns500619.trackreceptor.com, www.orionehydraulics.com, bbqs-algarve.com and ubilis.com.
these mail servers are often used with the mail servers aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Hosts with two IP numbers:
aspmx.l.google.com points to 2a00:1450:4009:c0f::1a and 172.217.76.26.
alt1.aspmx.l.google.com points to 2607:f8b0:4023:2801::1b and 192.178.128.26.
alt2.aspmx.l.google.com points to 2607:f8b0:4023:3003::1b and 172.253.145.27.
alt3.aspmx.l.google.com points to 2607:f8b0:4023:1015::1b and 172.253.135.27.
alt4.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26.