extraweb.ch - dns.ninja
extraweb.ch
| DNSSEC | ⚠️ Not signed | ||||||
| A | 51.96.35.205🇨🇭 Amazon51.96.0.0/16 EC2 ZRH prefix | ||||||
| PTR | venus.ctekag.ch | ||||||
| NS | 4.ctekns.ch ⭐ | ||||||
| A | 2600:9000:5305:db00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1499.awsdns-59.org | ||||||
| A | 205.251.197.219🇺🇸 Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1499.awsdns-59.org | ||||||
| NS | 1.ctekns.ch | ||||||
| A | 2600:9000:5302:2b00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-555.awsdns-05.net | ||||||
| A | 205.251.194.43🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-555.awsdns-05.net | ||||||
| NS | 2.ctekns.ch | ||||||
| A | 2600:9000:5306:a900::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1705.awsdns-21.co.uk | ||||||
| A | 205.251.198.169🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1705.awsdns-21.co.uk | ||||||
| NS | 3.ctekns.ch | ||||||
| A | 2600:9000:5301:300::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-259.awsdns-32.com | ||||||
| A | 205.251.193.3🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-259.awsdns-32.com | ||||||
| MX | mail.extraweb.ch ⭐ | ||||||
| A | 16.62.92.64🇨🇭 Amazon16.62.0.0/15 EC2 ZRH Prefix | ||||||
| PTR | mail1.ctek.ch | ||||||
| TXT | v=spf1 a mx include:spf.ctekag.ch -all | ||||||
| SOA | 4.ctekns.chhostmaster@ctekns.ch 2024-12-27 #14 | ||||||
ch
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.ch ⭐ | ||||||
| NS | b.nic.ch | ||||||
| NS | d.nic.ch | ||||||
| NS | e.nic.ch | ||||||
| NS | f.nic.ch | ||||||
| SOA | a.nic.chdns-operation@switch.ch 2026-08-05 #8 | ||||||
Subdomains
mail.extraweb.ch |
Same first word
extraweb.sk |
extraweb.de |
extraweb.fr |
extraweb.com |
extraweb.pl |
extraweb.it |
extraweb.no |
extraweb.nl |
extraweb.be |
extraweb.az |
extraweb.ch |
extraweb.online |
extraweb.in |
extraweb.ru |
extraweb.com.tr |
Similar names
DNS History
13 records (6 active, 7 former)
●NS1.ctekns.ch2026-03-19 → 2026-08-05 · 3 obs
● 2026-03-19 04:18:10
● 2026-08-05 03:04:00
●NS2.ctekns.ch2026-03-19 → 2026-08-05 · 3 obs
● 2026-03-19 04:18:10
● 2026-08-05 03:04:00
●NS3.ctekns.ch2026-03-19 → 2026-08-05 · 3 obs
● 2026-03-19 04:18:10
● 2026-08-05 03:04:00
●NS4.ctekns.ch2026-03-19 → 2026-08-05 · 3 obs
● 2026-03-19 04:18:10
● 2026-08-05 03:04:00
○NSns1.ctek.ch2015-05-05 → 2018-06-29 · 4 obs
● 2018-06-29 14:12:22
○ 2026-03-19 04:18:10
○ 2026-08-05 03:04:00
○NSns2.ctek.ch2015-05-05 → 2018-06-29 · 4 obs
● 2018-06-29 14:12:22
○ 2026-03-19 04:18:10
○ 2026-08-05 03:04:00
●MXmail.extraweb.ch2026-03-19 → 2026-08-05 · 3 obs
● 2026-03-19 04:18:10
● 2026-08-05 03:04:00
○MXmailcheck1.ctekag.ch2018-06-29 → 2018-06-29 · 4 obs
● 2018-06-29 14:12:22
○ 2026-03-19 04:18:10
○ 2026-08-05 03:04:00
○MXmailcheck2.ctekag.ch2018-06-29 → 2018-06-29 · 4 obs
● 2018-06-29 14:12:22
○ 2026-03-19 04:18:10
○ 2026-08-05 03:04:00
○MXmf3.mailcheck.ch2015-05-05 → 2017-08-30 · 4 obs
● 2017-08-30 19:36:36
○ 2018-06-29 14:12:22
○ 2026-08-05 03:04:00
○MXmf4.mailcheck.ch2015-05-05 → 2017-08-30 · 4 obs
● 2017-08-30 19:36:36
○ 2018-06-29 14:12:22
○ 2026-08-05 03:04:00
●A51.96.35.2052026-03-19 → 2026-08-05 · 3 obs
● 2026-03-19 04:18:10
● 2026-08-05 03:04:00
○A54.77.148.1622015-05-05 → 2018-06-29 · 4 obs
● 2018-06-29 14:12:22
○ 2026-03-19 04:18:10
○ 2026-08-05 03:04:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch... | - |
| extraweb.ch | 3.ctekns.ch, 2.ctekns.ch, 1.ctekns.ch, 4.ctekns.ch | 8 records |
✅ Authoritative Response
Server:205.251.198.169
NS records: 3.ctekns.ch, 2.ctekns.ch, 1.ctekns.ch, 4.ctekns.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for extraweb.ch (unsigned zone)
⏱️ Timing
Total: 1763ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 51.96.35.205 |
| NS | 4 | 1.ctekns.ch, 2.ctekns.ch... |
| MX | 1 | mail.extraweb.ch (pri: 0) |
| TXT | 1 | v=spf1 a mx include:spf.ctekag.ch -all |
| SOA | 1 | 4.ctekns.ch hostmaster.ctekns.ch |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (4.ctekns.ch, 3.ctekns.ch, 2.ctekns.ch...)
Analysis
Hierarchy
The domain mail.extraweb.ch falls under the parent extraweb.ch.
IP Addresses
extraweb.ch directs to one IP number, which is 51.96.35.205.
Among the host names that share IP numbers with extraweb.ch are imsk.ch, suter-bautenschutz.ch, eglin.ch and two others.
Name Servers
The domain extraweb.ch is delegated to these four name servers: 1.ctekns.ch, 2.ctekns.ch, 3.ctekns.ch and 4.ctekns.ch.
At least some of extraweb.ch's name servers are shared with other domains, for example pmp-architekten.ch, artigo.ch, empex.ch and two more.
These name servers are often deployed together with the name servers ns1.ctek.ch, ns2.ctek.ch, ns1.netwings.net and ns2.netwings.net.
Four hostnames, each resolving to a pair of IP addresses: 1.ctekns.ch directs to 205.251.194.43 and 2600:9000:5302:2b00::1; 2.ctekns.ch directs to 205.251.198.169 and 2600:9000:5306:a900::1; 3.ctekns.ch directs to 205.251.193.3 and 2600:9000:5301:300::1; 4.ctekns.ch directs to 205.251.197.219 and 2600:9000:5305:db00::1.
Mail Servers
extraweb.ch routes its mail through a single mail server, mail.extraweb.ch.
mail.extraweb.ch directs to just one IP number, 16.62.92.64.