dnscheckup.com - robtex.com
dnscheckup.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 185.17.139.100🇹🇷 TR-PENTECH-AS185.17.139.0/24 | ||||||
| PTR | sso.dnscheckup.com | ||||||
| NS | ns33.dnscheckup.com ⭐ | ||||||
| A | 185.17.139.100🇹🇷 TR-PENTECH-AS185.17.139.0/24 | ||||||
| PTR | sso.dnscheckup.com | ||||||
| NS | ns34.dnscheckup.com | ||||||
| A | 185.17.139.100🇹🇷 TR-PENTECH-AS185.17.139.0/24 | ||||||
| PTR | sso.dnscheckup.com | ||||||
| MX | dnscheckup.com ⭐ | ||||||
| A | 185.17.139.100🇹🇷 TR-PENTECH-AS185.17.139.0/24 | ||||||
| PTR | sso.dnscheckup.com | ||||||
| TXT | v=spf1 +a +mx +ip4:185.17.139.100 ~all | ||||||
| SOA | ns33.dnscheckup.cominfo@dnscheckup.com 2026-05-14 #0 | ||||||
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=1780197214 | ||||||
MX for
dnscheckup.com |
Subdomains
Same first word
dnscheckup.com |
DNS History
17 records (4 active, 13 former)
○NSns29.1and1.com2008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-26 07:58:06
○ 2026-05-31 03:39:48
○NSns30.1and1.com2008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-26 07:58:06
○ 2026-05-31 03:39:48
●NSns33.dnscheckup.com2026-03-23 → 2026-05-31 · 3 obs
● 2026-03-23 01:49:56
● 2026-05-31 03:39:48
●NSns34.dnscheckup.com2026-03-23 → 2026-05-31 · 3 obs
● 2026-03-23 01:49:56
● 2026-05-31 03:39:48
○NSpat.ns.cloudflare.com2015-06-26 → 2018-07-27 · 5 obs
● 2015-06-26 07:58:06
● 2018-07-27 18:41:18
○ 2026-03-23 01:49:56
○ 2026-05-31 03:39:48
○NSpaul.ns.cloudflare.com2015-06-26 → 2018-07-27 · 5 obs
● 2015-06-26 07:58:06
● 2018-07-27 18:41:18
○ 2026-03-23 01:49:56
○ 2026-05-31 03:39:48
○MXdc-4e0701e4d889.dnscheckup.com2018-07-27 → 2018-07-27 · 4 obs
● 2018-07-27 18:41:18
○ 2026-03-23 01:49:56
○ 2026-05-31 03:39:48
○MXdc-7cd959de.dnscheckup.com2015-06-26 → 2017-01-22 · 5 obs
● 2015-06-26 07:58:06
● 2017-01-22 12:28:16
○ 2018-07-27 18:41:18
○ 2026-05-31 03:39:48
●MXdnscheckup.com2026-03-23 → 2026-05-31 · 3 obs
● 2026-03-23 01:49:56
● 2026-05-31 03:39:48
○MXmx00.1and1.com2008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-26 07:58:06
○ 2026-05-31 03:39:48
○MXmx01.1and1.com2008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-26 07:58:06
○ 2026-05-31 03:39:48
○A104.27.148.42015-06-26 → 2018-07-27 · 5 obs
● 2015-06-26 07:58:06
● 2018-07-27 18:41:18
○ 2026-03-23 01:49:56
○ 2026-05-31 03:39:48
○A104.27.149.42015-06-26 → 2018-07-27 · 5 obs
● 2015-06-26 07:58:06
● 2018-07-27 18:41:18
○ 2026-03-23 01:49:56
○ 2026-05-31 03:39:48
●A185.17.139.1002026-03-23 → 2026-05-31 · 3 obs
● 2026-03-23 01:49:56
● 2026-05-31 03:39:48
○A2400:cb00:2048:1::681b:94042017-01-22 → 2018-07-27 · 5 obs
● 2017-01-22 12:28:16
● 2018-07-27 18:41:18
○ 2026-03-23 01:49:56
○ 2026-05-31 03:39:48
○A2400:cb00:2048:1::681b:95042017-01-22 → 2018-07-27 · 5 obs
● 2017-01-22 12:28:16
● 2018-07-27 18:41:18
○ 2026-03-23 01:49:56
○ 2026-05-31 03:39:48
○A82.165.239.872008-03-19 → 2008-03-19 · 3 obs
○ 2015-06-26 07:58:06
○ 2026-05-31 03:39:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| dnscheckup.com | ns33.dnscheckup.com, ns34.dnscheckup.com | 2 records |
✅ Authoritative Response
Server:185.17.139.100
NS records: ns33.dnscheckup.com, ns34.dnscheckup.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dnscheckup.com (unsigned zone)
⏱️ Timing
Total: 407ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.17.139.100 |
| NS | 2 | ns33.dnscheckup.com, ns34.dnscheckup.com |
| MX | 1 | dnscheckup.com (pri: 0) |
| TXT | 1 | v=spf1 +a +mx +ip4:185.17.139.100 ~all |
| SOA | 1 | ns33.dnscheckup.com info.dnscheckup.com |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (ns33.dnscheckup.com, ns34.dnscheckup.com)
Analysis
Hierarchy
ns33.dnscheckup.com, ns34.dnscheckup.com and sso.dnscheckup.com are all subdomains of dnscheckup.com.
Mail Server Role
The MX record for dnscheckup.com points back to dnscheckup.com — it is its own mail server.
IP Addresses
dnscheckup.com directs to one IP number, which is 185.17.139.100.
Other host names, for instance sso.dnscheckup.com, ns33.dnscheckup.com and ns34.dnscheckup.com share IP numbers with dnscheckup.com.
Name Servers
Two name servers handle the delegation for dnscheckup.com: ns33.dnscheckup.com and ns34.dnscheckup.com.
The name servers for dnscheckup.com are shared with other domains, such as ns33.dnscheckup.com, ns34.dnscheckup.com and sso.dnscheckup.com.
ns33.dnscheckup.com directs to 185.17.139.100, as does ns34.dnscheckup.com — both hostnames resolve to that one IP address.
ns33.dnscheckup.com along with ns34.dnscheckup.com each resolve to 185.17.139.100 IP addresses.
Mail Servers
The MX record for dnscheckup.com points to a single mail server: dnscheckup.com.
dnscheckup.com carries a single IP number, which is 185.17.139.100.