hrestudy.com - robtex.com
hrestudy.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a02:d480:a40:1::58🇩🇪 DFN2a02:d480::/32 -V6-MPG1 | ||||||
| A | 141.5.46.58🇩🇪 DFN141.5.0.0/16 MPI-DO-141-5 | ||||||
| NS | cspsrv00.mpi-sp.org ⭐ | ||||||
| NS | dns1.gwdg.de | ||||||
| A | 2a06:93c7:e1::1🇩🇪 GOENET2a06:93c0::/29 GWDG-2a06-93c0 | ||||||
| PTR | dns1.gwdg.de | ||||||
| A | 134.76.33.41🇩🇪 GOENET134.76.0.0/16 | ||||||
| PTR | dns1.gwdg.de | ||||||
| NS | dns2.gwdg.de | ||||||
| A | 2a06:93c7:e2::1🇩🇪 GOENET2a06:93c0::/29 GWDG-2a06-93c0 | ||||||
| PTR | dns2.gwdg.de | ||||||
| A | 134.76.33.42🇩🇪 GOENET134.76.0.0/16 | ||||||
| PTR | dns2.gwdg.de | ||||||
| NS | dns3.gwdg.de | ||||||
| A | 193.175.210.140🇩🇪 DFN193.174.0.0/15 -AGG-1 | ||||||
| PTR | dns3.gwdg.de | ||||||
| NS | ns1.mpi-sp.org | ||||||
| A | 2a02:d480:a40:1::38🇩🇪 DFN2a02:d480::/32 -V6-MPG1 | ||||||
| A | 141.5.46.38🇩🇪 DFN141.5.0.0/16 MPI-DO-141-5 | ||||||
| PTR | ns2.mpi-sp.org | ||||||
| NS | ns2.mpi-sp.org | ||||||
| A | 2a02:d480:a40:1::39🇩🇪 DFN2a02:d480::/32 -V6-MPG1 | ||||||
| A | 141.5.46.39🇩🇪 DFN141.5.0.0/16 MPI-DO-141-5 | ||||||
| PTR | ns1.mpi-sp.org | ||||||
| MX | smtp.mpi-sp.org ⭐ | ||||||
| A | 2a02:d480:a40:1::40🇩🇪 DFN2a02:d480::/32 -V6-MPG1 | ||||||
| PTR | smtp.mpi-sp.org | ||||||
| A | 141.5.46.40🇩🇪 DFN141.5.0.0/16 MPI-DO-141-5 | ||||||
| PTR | smtp.mpi-sp.org | ||||||
| SOA | cspsrv00.mpi-sp.orghostmaster@mpi-sp.org 2025-11-28 #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=1774409337 | ||||||
Same first word
hrestudy.com |
DNS History
9 records (9 active, 0 former)
●NScspsrv00.mpi-sp.org2026-02-23 → 2026-03-25 · 2 obs
● 2026-03-25 03:41:16
●NSns1.mpi-sp.org2026-02-23 → 2026-03-25 · 2 obs
● 2026-03-25 03:41:16
●NSns2.mpi-sp.org2026-02-23 → 2026-03-25 · 2 obs
● 2026-03-25 03:41:16
●MXsmtp.mpi-sp.org2026-02-23 → 2026-03-25 · 2 obs
● 2026-03-25 03:41:16
●A141.5.46.582026-02-23 → 2026-03-25 · 2 obs
● 2026-03-25 03:41:16
●A2a02:d480:a40:1::582026-02-23 → 2026-03-25 · 2 obs
● 2026-03-25 03:41:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| hrestudy.com | dns1.gwdg.de, dns2.gwdg.de, dns3.gwdg.de, ns1.mpi-sp.org... | - |
✅ Authoritative Response
Server:193.175.210.140
NS records: dns1.gwdg.de, dns2.gwdg.de, dns3.gwdg.de, ns1.mpi-sp.org, ns2.mpi-sp.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for hrestudy.com (unsigned zone)
⏱️ Timing
Total: 995ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 141.5.46.58 |
| AAAA | 1 | 2a02:d480:a40:1::58 |
| NS | 5 | dns2.gwdg.de, dns3.gwdg.de... |
| MX | 1 | smtp.mpi-sp.org (pri: 10) |
| SOA | 1 | cspsrv00.mpi-sp.org hostmaster.mpi-sp.or |
Analysis
IP Addresses
hrestudy.com resolves to two IP numbers: 2a02:d480:a40:1::58 and 141.5.46.58.
Name Servers
hrestudy.com is delegated to six name servers: dns1.gwdg.de, dns2.gwdg.de, dns3.gwdg.de, cspsrv00.mpi-sp.org, ns1.mpi-sp.org and ns2.mpi-sp.org.
hrestudy.com shares some name servers with other domains, for example zottoproject.org, cyi-data.org, humanet3.mpg.de, ukbc.gwdg.de and biophys.mpg.de.
these name servers are commonly used with dns1.demogr.mpg.de, dns0.mpi-klsb.mpg.de, dns1.mpi-klsb.mpg.de, dns1.mpipz.mpg.de, dns2.mpipz.mpg.de, ns-wiss-a.med.uni-goettingen.de, dns2.mpifr-bonn.mpg.de and dns.mpifr-bonn.mpg.de.
Host names with two IP numbers:
dns1.gwdg.de points to 2a06:93c7:e1::1 and 134.76.33.41; dns2.gwdg.de points to 2a06:93c7:e2::1 and 134.76.33.42; ns1.mpi-sp.org points to 2a02:d480:a40:1::38 and 141.5.46.38; ns2.mpi-sp.org points to 2a02:d480:a40:1::39 and 141.5.46.39.
Host names with one IP number:
dns3.gwdg.de points to 193.175.210.140.
Mail Servers
hrestudy.com is handled by a single mail server, smtp.mpi-sp.org.
hrestudy.com shares the mail server setup with other domains, for example formosacrypto.org, ml-dsa.org, mpi-sp.org, ml-dsa.com and slh-dsa.com.
smtp.mpi-sp.org resolves to two IPs: 2a02:d480:a40:1::40 and 141.5.46.40.