tel-b2b.com - robtex.com
tel-b2b.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 159.25.16.160🇩🇪 CSL159.25.0.0/16 | ||||||
| NS | x.ns.joker.com ⭐ | ||||||
| A | 194.245.103.13🇩🇪 CSL194.245.0.0/16 DE-CSL-GMBH-PA | ||||||
| PTR | x.ns.joker.com | ||||||
| NS | y.ns.joker.com | ||||||
| A | 2a01:4f8:c0c:165b::1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | y.ns.joker.com | ||||||
| A | 23.88.49.189🇩🇪 Hetzner23.88.0.0/17 HETZNER-DC | ||||||
| PTR | static.189.49.88.23.clients.your-server.de | ||||||
| NS | z.ns.joker.com | ||||||
| A | 2607:5300:203:7e6d::2222🇨🇦 OVH2607:5300::/32 Hosting route | ||||||
| PTR | z.ns.joker.com | ||||||
| A | 192.95.37.184🇨🇦 OVH192.95.0.0/18 Hosting route | ||||||
| PTR | z.ns.joker.com | ||||||
| MX | smtp.tel-b2b.com ⭐ | ||||||
| A | 213.41.60.40🇫🇷 COLT213.41.0.0/17 FR-COLT-FRANCE | ||||||
| PTR | f-041.mailbooster.net | ||||||
| A | 213.41.60.41🇫🇷 COLT213.41.0.0/17 FR-COLT-FRANCE | ||||||
| PTR | mx2.tel-b2b.com | ||||||
| TXT | v=spf1 a mx include:spf.express-mail.com -all | ||||||
| SOA | x.ns.joker.comhostmaster@joker.com 2023-12-04 #91 | ||||||
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=1784447327 | ||||||
Subdomains
Same first word
tel-b2b.com |
Similar names
DNS History
5 records (5 active, 0 former)
●NSx.ns.joker.com2026-07-19 → 2026-07-19 · 2 obs
● 2026-07-19 08:02:14
●NSy.ns.joker.com2026-07-19 → 2026-07-19 · 2 obs
● 2026-07-19 08:02:14
●NSz.ns.joker.com2026-07-19 → 2026-07-19 · 2 obs
● 2026-07-19 08:02:14
●MXsmtp.tel-b2b.com2026-07-19 → 2026-07-19 · 2 obs
● 2026-07-19 08:02:14
●A159.25.16.1602026-07-19 → 2026-07-19 · 2 obs
● 2026-07-19 08:02:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, d.gtld-servers.net... | - |
| tel-b2b.com | x.ns.joker.com, y.ns.joker.com, z.ns.joker.com | 5 records |
✅ Authoritative Response
Server:23.88.49.189
NS records: x.ns.joker.com, y.ns.joker.com, z.ns.joker.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tel-b2b.com (unsigned zone)
⏱️ Timing
Total: 327ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 159.25.16.160 |
| NS | 3 | y.ns.joker.com, x.ns.joker.com... |
| MX | 1 | smtp.tel-b2b.com (pri: 50) |
| TXT | 1 | v=spf1 a mx include:spf.express-mail.com |
| SOA | 1 | x.ns.joker.com hostmaster.joker.com |
📌 Glue Records Collected
Total: 5
Out-of-bailiwick: 5 (x.ns.joker.com, y.ns.joker.com, y.ns.joker.com...)
Analysis
Hierarchy
The parent domain of smtp.tel-b2b.com and mx2.tel-b2b.com is tel-b2b.com.
IP Addresses
tel-b2b.com directs to one IP number, which is 159.25.16.160.
Among the host names that share IP numbers with tel-b2b.com are assoprovider.net, fundraisingcoaching.org, lobby4kids.org and two others.
Name Servers
tel-b2b.com is served by three name servers: x.ns.joker.com, y.ns.joker.com and z.ns.joker.com.
There is at least partial name server overlap between tel-b2b.com and other domains — bad-data.net, die-linke-meissen.de, gelaende.de and two more among them.
The name servers a.ns.joker.com, b.ns.joker.com and c.ns.joker.com are often found in combination with these name servers.
Hosts with two IP numbers each:
The A records for y.ns.joker.com return 23.88.49.189 and 2a01:4f8:c0c:165b::1.
The A records for z.ns.joker.com return 192.95.37.184 and 2607:5300:203:7e6d::2222.
Hosts that resolve to one IP address:
x.ns.joker.com resolves to the IP address 194.245.103.13.
Mail Servers
tel-b2b.com routes its mail through a single mail server, smtp.tel-b2b.com.
smtp.tel-b2b.com carries two IP numbers: 213.41.60.40 and 213.41.60.41.