kosterusa.com - robtex.com
kosterusa.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 178.254.18.47🇩🇪 EVANZOAS178.254.0.0/19 DE-EVANZO-MK | ||||||
| PTR | v45038.1blu.de | ||||||
| NS | ns49.domaincontrol.com ⭐ | ||||||
| A | 2603:5:2182::19🇺🇸 GODADDY-DNS2603:5:2180::/44 | ||||||
| PTR | ns49.domaincontrol.com | ||||||
| A | 97.74.104.25🇺🇸 GODADDY-DNS97.74.104.0/23 | ||||||
| PTR | ns49.domaincontrol.com | ||||||
| NS | ns50.domaincontrol.com | ||||||
| A | 2603:5:2282::19🇺🇸 GODADDY-DNS2603:5:2280::/44 | ||||||
| PTR | ns50.domaincontrol.com | ||||||
| A | 173.201.72.25🇺🇸 GODADDY-DNS173.201.72.0/23 | ||||||
| PTR | ns50.domaincontrol.com | ||||||
| MX | mx1.koester.eu ⭐ | ||||||
| A | 91.249.216.98🇩🇪 EWETEL91.248.0.0/15 DE-EWETEL-20120223 | ||||||
| PTR | leasedline-static-091-249-216-098.ewe-ip-backbone.de | ||||||
| MX | mx2.koester.eu(20) | ||||||
| A | 90.187.67.69🇩🇪 VODANET90.187.0.0/16 Vodafone-gesamt | ||||||
| PTR | business-90-187-67-69.pool2.vodafone-ip.de | ||||||
| MX | mx3.koester.eu(30) | ||||||
| A | 31.150.210.50🇩🇪 EWETEL31.150.0.0/16 DE-EWETEL-20110217 | ||||||
| PTR | dyndsl-031-150-210-050.ewe-ip-backbone.de | ||||||
| TXT | MS=ms31595080 | ||||||
| TXT | v=spf1 mx a:smtp.bents-gruppe.de include:ispgateway.de ip4:83.138.69.164 ~all | ||||||
| SOA | ns49.domaincontrol.comdns@jomax.net 2022-11-29 #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=1778505866 | ||||||
Same first word
kosterusa.com |
Similar names
DNS History
10 records (6 active, 4 former)
●NSns49.domaincontrol.com2015-05-10 → 2026-05-11 · 2 obs
● 2026-05-11 13:38:52
●NSns50.domaincontrol.com2015-05-10 → 2026-05-11 · 2 obs
● 2026-05-11 13:38:52
○MXavrelay2.omg.de2015-05-10 → 2017-06-28 · 4 obs
● 2017-06-28 01:19:56
○ 2026-04-05 16:31:02
○ 2026-05-11 13:38:52
○MXmailgate01.omg.de2015-05-10 → 2017-06-28 · 4 obs
● 2017-06-28 01:19:56
○ 2026-04-05 16:31:02
○ 2026-05-11 13:38:52
●MXmx1.koester.eu2026-04-05 → 2026-05-11 · 3 obs
● 2026-04-05 16:31:02
● 2026-05-11 13:38:52
●MXmx2.koester.eu2026-04-05 → 2026-05-11 · 3 obs
● 2026-04-05 16:31:02
● 2026-05-11 13:38:52
●MXmx3.koester.eu2026-04-05 → 2026-05-11 · 3 obs
● 2026-04-05 16:31:02
● 2026-05-11 13:38:52
●A178.254.18.472026-04-05 → 2026-05-11 · 3 obs
● 2026-04-05 16:31:02
● 2026-05-11 13:38:52
○A217.172.188.572015-05-10 → 2015-05-10 · 3 obs
○ 2015-10-10 01:55:08
○ 2026-05-11 13:38:52
○A85.25.92.1022015-10-10 → 2017-06-28 · 5 obs
● 2015-10-10 01:55:08
● 2017-06-28 01:19:56
○ 2026-04-05 16:31:02
○ 2026-05-11 13:38:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | d.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net... | - |
| kosterusa.com | ns49.domaincontrol.com, ns50.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.72.25
NS records: ns49.domaincontrol.com, ns50.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kosterusa.com (unsigned zone)
⏱️ Timing
Total: 101ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 178.254.18.47 |
| NS | 2 | ns49.domaincontrol.com, ns50.domaincontrol.com |
| MX | 3 | mx2.koester.eu (pri: 20), mx1.koester.eu (pri: 10)... |
| TXT | 2 | MS=ms31595080, v=spf1 mx a:smtp.bents-gruppe.de include |
| SOA | 1 | ns49.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns49.domaincontrol.com, ns49.domaincontrol.com, ns50.domaincontrol.com...)
Analysis
IP Addresses
kosterusa.com resolves to one IP number: 178.254.18.47.
Other host names, for instance koster.com.ro, koster.ie, kbag.eu, dieabdichter-rz.de and koster.eu share IP numbers with kosterusa.com.
Name Servers
kosterusa.com's delegation uses two name servers: ns49.domaincontrol.com and ns50.domaincontrol.com.
kosterusa.com uses the same name server setup as other domains, such as signaramaurbandale.com, milescheaper.org, previseranalytics.com, livelaughcode.com and salsascooter.com.
Host names with two IPs:
ns49.domaincontrol.com points to 2603:5:2182::19 and 97.74.104.25
ns50.domaincontrol.com points to 2603:5:2282::19 and 173.201.72.25
Mail Servers
Three mail servers handle kosterusa.com: mx1.koester.eu, mx2.koester.eu and mx3.koester.eu.
kosterusa.com shares some mail servers with other domains, at least in part; for example koester.eu and koster.eu.
Host names with a single IP:
mx1.koester.eu points to 91.249.216.98; mx2.koester.eu points to 90.187.67.69; mx3.koester.eu points to 31.150.210.50.