postcache.dev - robtex.com
postcache.dev
| DNSSEC | ⚠️ Not signed | ||||||
| A | 217.28.91.55🇨🇿 GREENDATA217.28.88.0/21 | ||||||
| NS | ns1.regzone.cz ⭐ | ||||||
| A | 2a00:19a0:3:71:0:d9c6:710a:1🇨🇿 ZONER-AS2a00:19a0::/32 ZONER-IPV6-NET | ||||||
| PTR | ns1.regzone.cz | ||||||
| A | 217.198.113.10🇨🇿 ZONER-AS217.198.112.0/20 ZONER-NET | ||||||
| PTR | ns1.regzone.cz | ||||||
| NS | ns1.regzone.de | ||||||
| A | 2600:3c02::f03c:91ff:fedb:a6e7🇺🇸 AKAMAI-LINODE-AP2600:3c02::/32 Akamai Technologies | ||||||
| PTR | ns1.regzone.de | ||||||
| A | 23.92.29.43🇺🇸 AKAMAI-LINODE-AP23.92.28.0/22 Akamai Technologies | ||||||
| PTR | ns1.regzone.de | ||||||
| NS | ns1.regzone.info | ||||||
| A | 2001:1528:147::10🇨🇿 CASABLANCA-AS2001:1528::/32 Casablanca INT v6 network | ||||||
| PTR | ns1.regzone.info | ||||||
| A | 81.0.233.10🇨🇿 CASABLANCA-AS81.0.232.0/21 Casablanca INT | ||||||
| MX | mail.isfgroup.cz ⭐ | ||||||
| A | 217.28.91.36🇨🇿 GREENDATA217.28.88.0/21 | ||||||
| PTR | mail.isfgroup.cz | ||||||
| TXT | v=spf1 mx -all | ||||||
| SOA | ns1.regzone.czadministrator@czechia.cz 2026-10-08 #2 | ||||||
dev
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns-tld1.charlestonroadregistry.com ⭐ | ||||||
| NS | ns-tld2.charlestonroadregistry.com | ||||||
| NS | ns-tld3.charlestonroadregistry.com | ||||||
| NS | ns-tld4.charlestonroadregistry.com | ||||||
| NS | ns-tld5.charlestonroadregistry.com | ||||||
| SOA | ns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=1 | ||||||
Same first word
postcache.dev |
postcache.com |
Similar names
Previous names
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DNS History
5 records (5 active, 0 former)
●NSns1.regzone.cz2026-10-07 → 2026-10-08 · 2 obs
● 2026-10-08 16:13:10
●NSns1.regzone.de2026-10-07 → 2026-10-08 · 2 obs
● 2026-10-08 16:13:10
●NSns1.regzone.info2026-10-07 → 2026-10-08 · 2 obs
● 2026-10-08 16:13:10
●MXmail.isfgroup.cz2026-10-08 → 2026-10-08 · 2 obs
● 2026-10-08 16:13:10
●A217.28.91.552026-10-07 → 2026-10-08 · 2 obs
● 2026-10-08 16:13:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dev | ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com... | 10 records |
| postcache.dev | ns1.regzone.de, ns1.regzone.cz, ns1.regzone.info | - |
✅ Authoritative Response
Server:23.92.29.43
NS records: ns1.regzone.de, ns1.regzone.cz, ns1.regzone.info
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for postcache.dev (unsigned zone)
⏱️ Timing
Total: 976ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.28.91.55 |
| NS | 3 | ns1.regzone.cz, ns1.regzone.de... |
| MX | 1 | mail.isfgroup.cz (pri: 10) |
| TXT | 1 | v=spf1 mx -all |
| SOA | 1 | ns1.regzone.cz administrator.czechia.cz |
📌 Glue Records Collected
Total: 10
Out-of-bailiwick: 10 (ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)
Analysis
IP Addresses
postcache.dev directs to one IP number, which is 217.28.91.55.
Among the host names that share IP numbers with postcache.dev are danielcecetka.com, dovhomilja.com, jeffreyclients.com and two others.
Name Servers
Three name servers are authoritative for postcache.dev: ns1.regzone.cz, ns1.regzone.de and ns1.regzone.info.
postcache.dev has at least partial name server overlap with other domains, such as akvarianamiru.cz, djautoservis.cz, kleg.cz and two others.
ns1.regzone.cz resolves to 217.198.113.10 and 2a00:19a0:3:71:0:d9c6:710a:1. ns1.regzone.de resolves to 23.92.29.43 and 2600:3c02::f03c:91ff:fedb:a6e7. ns1.regzone.info resolves to 81.0.233.10 and 2001:1528:147::10. All three hostnames point to two IP numbers each.
Mail Servers
postcache.dev routes its mail through a single mail server, mail.isfgroup.cz.
postcache.dev has the same mail server arrangement as a number of other domains, for example place4u.cz, alfresco.sk, nextcrm.io and two more.
The mail servers of postcache.dev are at least partially shared with other domains, including ekonprofi.cz.
There is one IP number for mail.isfgroup.cz: 217.28.91.36.