r-tutorials.com - robtex.com
r-tutorials.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.88.34.199🇩🇪 CLOUDPIT81.88.32.0/20 | ||||||
| PTR | hos(0x74313735).alfahosting-server.de | ||||||
| NS | cns1.alfahosting.info ⭐ | ||||||
| A | 2a01:64c0:0:5000::8🇩🇪 CLOUDPIT2a01:64c0::/32 | ||||||
| PTR | cns1.cloudpit.de | ||||||
| A | 109.237.142.8🇩🇪 CLOUDPIT109.237.128.0/20 | ||||||
| PTR | cns1.cloudpit.de | ||||||
| NS | cns2.alfahosting.info | ||||||
| A | 2a01:4f8:2b02:a88::105🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | cns2.cloudpit.com | ||||||
| A | 148.251.254.105🇩🇪 Hetzner148.251.0.0/16 HETZNER-RZ-BLK-ERX2 | ||||||
| PTR | cns2.cloudpit.com | ||||||
| NS | cns3.alfahosting.info | ||||||
| A | 2a02:2b80:101:5000::8🇩🇪 CLOUDPIT2a02:2b80:101::/48 | ||||||
| PTR | cns3.cloudpit.io | ||||||
| A | 109.237.143.8🇩🇪 CLOUDPIT109.237.128.0/20 | ||||||
| PTR | cns3.cloudpit.io | ||||||
| MX | mx03.secure-mailgate.com ⭐ | ||||||
| A | 46.243.88.174🇩🇪 CLOUDPIT46.243.88.0/21 | ||||||
| PTR | node03.secure-mailgate.com | ||||||
| A | 46.243.88.176🇩🇪 CLOUDPIT46.243.88.0/21 | ||||||
| PTR | node04.secure-mailgate.com | ||||||
| MX | mx04.secure-mailgate.com ⭐ | ||||||
| A | 46.243.88.175🇩🇪 CLOUDPIT46.243.88.0/21 | ||||||
| PTR | node03.secure-mailgate.com | ||||||
| A | 46.243.88.177🇩🇪 CLOUDPIT46.243.88.0/21 | ||||||
| PTR | node04.secure-mailgate.com | ||||||
| SOA | cns1.alfahosting.infohostmaster@alfahosting.de 2026-01-13 #1 | ||||||
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=1777349706 | ||||||
Subdomains
mail.r-tutorials.com |
Same first word
r-tutorials.com |
DNS History
9 records (6 active, 3 former)
●NScns1.alfahosting.info2015-08-07 → 2026-04-28 · 2 obs
● 2026-04-28 04:34:48
●NScns2.alfahosting.info2015-08-07 → 2026-04-28 · 2 obs
● 2026-04-28 04:34:48
●NScns3.alfahosting.info2015-08-07 → 2026-04-28 · 2 obs
● 2026-04-28 04:34:48
○MXmail.r-tutorials.com2015-08-07 → 2017-03-30 · 4 obs
● 2017-03-30 20:14:56
○ 2026-04-04 13:24:38
○ 2026-04-28 04:34:48
●MXmx03.secure-mailgate.com2026-04-04 → 2026-04-28 · 3 obs
● 2026-04-04 13:24:38
● 2026-04-28 04:34:48
●MXmx04.secure-mailgate.com2026-04-04 → 2026-04-28 · 3 obs
● 2026-04-04 13:24:38
● 2026-04-28 04:34:48
○A109.237.134.1742015-08-07 → 2015-11-24 · 4 obs
● 2015-11-24 10:27:42
○ 2016-03-04 08:11:58
○ 2026-04-28 04:34:48
○A109.237.138.242016-03-04 → 2017-03-30 · 5 obs
● 2016-03-04 08:11:58
● 2017-03-30 20:14:56
○ 2026-04-04 13:24:38
○ 2026-04-28 04:34:48
●A81.88.34.1992026-04-04 → 2026-04-28 · 3 obs
● 2026-04-04 13:24:38
● 2026-04-28 04:34:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| r-tutorials.com | cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info | - |
✅ Authoritative Response
Server:109.237.142.8
NS records: cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for r-tutorials.com (unsigned zone)
⏱️ Timing
Total: 534ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.88.34.199 |
| NS | 3 | cns3.alfahosting.info, cns2.alfahosting.info... |
| MX | 2 | mx04.secure-mailgate.com (pri: 10), mx03.secure-mailgate.com (pri: 10) |
| SOA | 1 | cns1.alfahosting.info hostmaster.alfahos |
Analysis
Hierarchy
mail.r-tutorials.com is a child of r-tutorials.com.
IP Addresses
r-tutorials.com resolves to one IP number: 81.88.34.199.
Other host names, for instance mail.hypnotix.biz, mail.lothar-reichel.de, mail.elar.de, mail.webdesigner-store.com and ihvo.de share IP numbers with r-tutorials.com.
Name Servers
r-tutorials.com is delegated to three name servers: cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.
r-tutorials.com at least partially shares name servers with other domains, including crb-express.eu, ankedoo.com, eco-opportunities.de, ledinger.at and wahlkampfmedien.de.
Host names with two IP numbers:
cns1.alfahosting.info: 2a01:64c0:0:5000::8 and 109.237.142.8
cns2.alfahosting.info: 2a01:4f8:2b02:a88::105 and 148.251.254.105
cns3.alfahosting.info: 2a02:2b80:101:5000::8 and 109.237.143.8
Mail Servers
r-tutorials.com is served by two mail servers mx03.secure-mailgate.com and mx04.secure-mailgate.com.
r-tutorials.com shares the same mail server setup as other domains, for instance numarx.de, xn--grneliebe-r9a.de, ti-co.de, gobber.eu and ffw-neuhaus.de.
Host names with two IPs:
mx03.secure-mailgate.com points to 46.243.88.174 and 46.243.88.176
mx04.secure-mailgate.com points to 46.243.88.175 and 46.243.88.177