koobook.net - robtex.com
koobook.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 89.40.227.156🇮🇹 AS-NETJOIN89.40.227.0/24 | ||||||
| NS | ns1-eu.123ns.eu ⭐ | ||||||
| A | 2001:8d8:1801:71::1🇩🇪 IONOS-AS2001:8d8::/32 DE-IONOS-20020910 | ||||||
| A | 82.165.64.26🇩🇪 IONOS-AS82.165.0.0/16 IONOS-PA-4 | ||||||
| NS | ns2-eu.123ns.de | ||||||
| A | 2a01:4f8:171:1c61::2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | ns2-eu.123ns.eu | ||||||
| A | 136.243.153.243🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3 | ||||||
| PTR | ns2-eu.123ns.eu | ||||||
| NS | ns3-eu.123ns.eu | ||||||
| A | 81.92.4.138🇩🇪 TAL-DE81.92.0.0/20 TAL.DE Klaus Internet Service GmbH | ||||||
| PTR | ns3-eu.123ns.eu | ||||||
| NS | ns4-eu.123ns.de | ||||||
| A | 2a01:239:0:c9::1🇩🇪 IONOS-AS2a01:239::/32 IONOS SE ber.de | ||||||
| PTR | ns4-eu.123ns.eu | ||||||
| A | 85.215.121.239🇩🇪 IONOS-AS85.215.96.0/19 IONOS SE ber.de | ||||||
| PTR | ns4-eu.123ns.eu | ||||||
| MX | mail.koobook.net ⭐ | ||||||
| A | 89.40.227.156🇮🇹 AS-NETJOIN89.40.227.0/24 | ||||||
| SOA | ns1-eu.123ns.euhostmaster@123ns.eu 2025-12-01 #0 | ||||||
net
| 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=1774434487 | ||||||
Subdomains
mail.koobook.net |
Same first word
koobook.net |
Similar names
DNS History
10 records (6 active, 4 former)
●MXmail.koobook.net2015-12-05 → 2026-03-25 · 3 obs
● 2015-12-05 14:33:36
● 2026-03-25 10:47:28
○MXmailgw.koobook.net2015-08-01 → 2015-08-01 · 3 obs
○ 2015-12-05 14:33:36
○ 2026-03-25 10:47:28
○A163.172.116.922017-10-08 → 2018-08-29 · 5 obs
● 2017-10-08 22:24:36
● 2018-08-29 23:24:34
○ 2026-02-16 09:57:38
○ 2026-03-25 10:47:28
○A5.150.139.1302015-08-01 → 2015-08-01 · 3 obs
○ 2015-12-05 14:33:36
○ 2026-03-25 10:47:28
●A89.40.227.1562026-02-16 → 2026-03-25 · 3 obs
● 2026-02-16 09:57:38
● 2026-03-25 10:47:28
○A89.46.197.702015-12-05 → 2017-08-26 · 5 obs
● 2015-12-05 14:33:36
● 2017-08-26 04:53:20
○ 2017-10-08 22:24:36
○ 2026-03-25 10:47:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | m.gtld-servers.net, f.gtld-servers.net, e.gtld-servers.net, h.gtld-servers.net... | - |
| koobook.net | ns1-eu.123ns.eu, ns2-eu.123ns.de, ns3-eu.123ns.eu, ns4-eu.123ns.de | - |
✅ Authoritative Response
Server:85.215.121.239
NS records: ns1-eu.123ns.eu, ns2-eu.123ns.de, ns3-eu.123ns.eu, ns4-eu.123ns.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for koobook.net (unsigned zone)
⏱️ Timing
Total: 1074ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 89.40.227.156 |
| NS | 4 | ns1-eu.123ns.eu, ns3-eu.123ns.eu... |
| MX | 1 | mail.koobook.net (pri: 10) |
| SOA | 1 | ns1-eu.123ns.eu hostmaster.123ns.eu |
Analysis
Hierarchy
koobook.net is the parent of mail.koobook.net.
IP Addresses
koobook.net resolves to one IP number: 89.40.227.156.
other host names including mail.antipodi.com, antipodi.com, mail.antipodi.it, mail.booksinternational.it and mail.balestri.com share IP numbers with koobook.net.
Name Servers
koobook.net is delegated to four name servers: ns2-eu.123ns.de, ns4-eu.123ns.de, ns1-eu.123ns.eu and ns3-eu.123ns.eu.
koobook.net at least partially shares name servers with other domains, for instance iwgdpt.org, bito.direct, euro-engineering.be, summit8800.com and jevelop.de.
Host names with two IP numbers:
ns2-eu.123ns.de points to 2a01:4f8:171:1c61::2 and 136.243.153.243.
ns4-eu.123ns.de points to 2a01:239:0:c9::1 and 85.215.121.239.
ns1-eu.123ns.eu points to 2001:8d8:1801:71::1 and 82.165.64.26.
Host names with one IP number:
ns3-eu.123ns.eu points to 81.92.4.138.
Mail Servers
koobook.net is handled by a single mail server, mail.koobook.net.
mail.koobook.net resolves to IP 89.40.227.156.