siebert.cn - dns.ninja
siebert.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 89.31.143.90🇩🇪 UDAG89.31.143.0/24 | ||||||
| NS | ns.udag.de ⭐ | ||||||
| A | 2001:8d8:fe:53:217:160:80:253🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific | ||||||
| PTR | ns.udag.de | ||||||
| A | 217.160.80.253🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific | ||||||
| PTR | ns.udag.de | ||||||
| NS | ns.udag.net | ||||||
| A | 2607:f1c0:fe:53:185:132:33:253🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US | ||||||
| PTR | ns.udag.net | ||||||
| A | 185.132.33.253🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS) | ||||||
| PTR | ns.udag.net | ||||||
| NS | ns.udag.org | ||||||
| A | 2607:f1c0:fe:53:185:132:34:253🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US | ||||||
| PTR | ns.udag.org | ||||||
| A | 185.132.34.253🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS) | ||||||
| PTR | ns.udag.org | ||||||
| MX | mail.siebert-group.com ⭐ | ||||||
| A | 213.135.7.76🇩🇪 INTERSAAR-AS213.135.0.0/19 intersaar GmbH Saarbruecken Germany | ||||||
| PTR | mail.siebert-group.com | ||||||
| TXT | v=spf1 a:mail.siebert-group.com a:vm-kas-smgw.eppelborn.siebert-group.com ip4... | ||||||
| SOA | ns.udag.dehostmaster@united-domains.de 2024-09-20 #2 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn 2035-05-11 #71 | ||||||
Same first word
Similar names
DNS History
13 records (5 active, 8 former)
●NSns.udag.de2015-11-07 → 2026-07-17 · 3 obs
● 2015-11-07 01:33:40
● 2026-07-17 12:03:30
●NSns.udag.net2015-11-07 → 2026-07-17 · 3 obs
● 2015-11-07 01:33:40
● 2026-07-17 12:03:30
●NSns.udag.org2015-11-07 → 2026-07-17 · 3 obs
● 2015-11-07 01:33:40
● 2026-07-17 12:03:30
○NSns1.intersaar.de2015-06-29 → 2015-06-29 · 3 obs
○ 2015-11-07 01:33:40
○ 2026-07-17 12:03:30
○NSns2.intersaar.de2015-06-29 → 2015-06-29 · 3 obs
○ 2015-11-07 01:33:40
○ 2026-07-17 12:03:30
○NSns3.intersaar.de2015-06-29 → 2015-06-29 · 3 obs
○ 2015-11-07 01:33:40
○ 2026-07-17 12:03:30
●MXmail.siebert-group.com2015-11-07 → 2026-07-17 · 6 obs
● 2015-11-07 01:33:40
● 2018-08-25 21:17:40
○ 2026-07-02 17:15:20
● 2026-07-03 04:35:22
● 2026-07-17 12:03:30
○MXmx1.intersaar.de2015-06-29 → 2015-06-29 · 3 obs
○ 2015-11-07 01:33:40
○ 2026-07-17 12:03:30
○MXmx2.intersaar.de2015-06-29 → 2015-06-29 · 3 obs
○ 2015-11-07 01:33:40
○ 2026-07-17 12:03:30
○A213.135.13.1702015-06-29 → 2015-06-29 · 3 obs
○ 2015-11-07 01:33:40
○ 2026-07-17 12:03:30
○A89.31.143.12015-11-07 → 2018-08-25 · 7 obs
● 2015-11-07 01:33:40
○ 2016-01-21 07:07:30
○ 2017-01-02 15:33:58
● 2018-08-25 21:17:40
○ 2026-07-02 17:15:20
○ 2026-07-17 12:03:30
○A89.31.143.162016-01-21 → 2017-01-02 · 5 obs
● 2016-01-21 07:07:30
● 2017-01-02 15:33:58
○ 2018-08-25 21:17:40
○ 2026-07-17 12:03:30
●A89.31.143.902026-07-03 → 2026-07-17 · 3 obs
● 2026-07-03 04:35:22
● 2026-07-17 12:03:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn... | - |
| siebert.cn | ns.udag.de, ns.udag.net, ns.udag.org | - |
✅ Authoritative Response
Server:217.160.80.253
NS records: ns.udag.de, ns.udag.net, ns.udag.org
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at cn: Error: DNS query timeout: 203.119.29.1 for DNSKEY cn
⏱️ Timing
Total: 4069ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 89.31.143.90 |
| NS | 3 | ns.udag.net, ns.udag.org... |
| MX | 1 | mail.siebert-group.com (pri: 10) |
| TXT | 1 | v=spf1 a:mail.siebert-group.com a:vm-kas |
| SOA | 1 | ns.udag.de hostmaster.united-domains.de |
Analysis
IP Addresses
siebert.cn directs to one IP number, which is 89.31.143.90.
Among the host names that share IP numbers with siebert.cn are dubelaar.net, kettler.biz, way-in.de and two others.
Name Servers
The authoritative name servers for siebert.cn are ns.udag.de, ns.udag.net and ns.udag.org — three in total.
siebert.cn partially shares its NS delegation with several other domains, including vfl.info, cbmonline.org, beckerralf.com and two others.
ns.udag.de, ns.udag.net and ns.udag.org all resolve to exactly two IP numbers apiece: ns.udag.de → 217.160.80.253 and 2001:8d8:fe:53:217:160:80:253; ns.udag.net → 185.132.33.253 and 2607:f1c0:fe:53:185:132:33:253; ns.udag.org → 185.132.34.253 and 2607:f1c0:fe:53:185:132:34:253.
Mail Servers
siebert.cn routes its mail through a single mail server, mail.siebert-group.com.
siebert.cn has the same mail server arrangement as a number of other domains, for example siebert.lt, siebert-solar.de, siebert.ru and two more.
At least a portion of siebert.cn's mail servers are also used by other domains, for example lrd.at.
It is common to find these mail servers paired with the mail servers mail-gw.siebert-group.com.
mail.siebert-group.com directs to just one IP number, 213.135.7.76.