isu.org - robtex.com
isu.org
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1771291736 | ||||||
rank #3971 in the tld
WOT: SAFE (77/100)
📈 Tranco rank: #109,394
Subdomains
Same first word
Similar names
DNS History
14 records (5 active, 9 former)
●NSns1.worldwidedns.net2015-08-05 → 2026-03-02 · 2 obs
● 2026-03-02 09:35:40
●NSns2.worldwidedns.net2015-08-05 → 2026-03-02 · 2 obs
● 2026-03-02 09:35:40
●NSns3.worldwidedns.net2015-08-05 → 2026-03-02 · 2 obs
● 2026-03-02 09:35:40
○MXanubis.interibex.ch2015-09-13 → 2016-06-08 · 4 obs
● 2016-06-08 23:56:36
○ 2016-07-08 03:24:04
○ 2026-03-02 09:35:40
○MXisu-ch.mail.protection.outlook.com2020-01-08 → 2020-01-08 · 4 obs
● 2020-01-08 18:50:58
○ 2020-10-05 11:59:58
○ 2026-03-02 09:35:40
○MXisu-ml01.isu.ch2016-09-15 → 2017-09-19 · 5 obs
● 2016-09-15 04:02:22
● 2017-09-19 06:06:12
○ 2020-01-08 18:50:58
○ 2026-03-02 09:35:40
○MXisu-org.mail.protection.outlook.com2020-10-05 → 2021-07-14 · 5 obs
● 2020-10-05 11:59:58
● 2021-07-14 20:19:30
○ 2026-02-24 10:09:32
○ 2026-03-02 09:35:40
○MXisusrv1.isu.ch2016-07-08 → 2016-09-29 · 5 obs
● 2016-07-08 03:24:04
● 2016-09-29 13:58:24
○ 2016-10-21 07:54:12
○ 2026-03-02 09:35:40
●MXmailfilter.evok.ch2026-02-24 → 2026-03-02 · 3 obs
● 2026-02-24 10:09:32
● 2026-03-02 09:35:40
○A13.94.234.432017-09-19 → 2017-09-19 · 5 obs
● 2017-09-19 06:06:08
● 2017-09-19 06:06:12
○ 2020-01-08 18:50:58
○ 2026-03-02 09:35:40
○A137.116.193.1322020-01-08 → 2020-12-28 · 5 obs
● 2020-01-08 18:50:58
● 2020-12-28 18:40:42
○ 2021-05-23 19:42:42
○ 2026-03-02 09:35:40
○A20.199.190.762021-05-23 → 2021-07-14 · 5 obs
● 2021-05-23 19:42:42
● 2021-07-14 20:19:30
○ 2026-02-24 10:09:32
○ 2026-03-02 09:35:40
●A20.250.162.1502026-02-24 → 2026-03-02 · 3 obs
● 2026-02-24 10:09:32
● 2026-03-02 09:35:40
○A23.97.160.562015-09-13 → 2017-08-29 · 4 obs
● 2017-08-29 16:24:56
○ 2017-09-19 06:06:08
○ 2026-03-02 09:35:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| isu.org | ns3.worldwidedns.net, ns2.worldwidedns.net, ns1.worldwidedns.net | - |
✅ Authoritative Response
Server: 185.136.98.115
NS records: ns3.worldwidedns.net, ns2.worldwidedns.net, ns1.worldwidedns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for isu.org (unsigned zone)
⏱️ Timing
Total: 516ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 20.250.162.150 |
| NS | 3 | ns3.worldwidedns.net, ns1.worldwidedns.net... |
| MX | 1 | mailfilter.evok.ch (pri: 10) |
| TXT | 2 | ms-domain-verification=a5cff67d-1108-4a0, v=spf1 a mx ip4:193.246.44.192 ip4:212.7 |
| SOA | 1 | ns1.worldwidedns.net hostmaster.isu.org |
Analysis
Hierarchy
isu.org is the parent of results.isu.org and static.isu.org.
IP Addresses
isu.org points to an IP address: 20.250.162.150.
Name Servers
isu.org is delegated to three name servers ns1.worldwidedns.net, ns2.worldwidedns.net and ns3.worldwidedns.net.
isu.org at least partially shares name servers with other domains, for instance forwardvueavi.com, dubayblog.com, pensiam.com, boot-disk.net and 360luxuries.com.
These name servers are commonly used with ns4.worldwidedns.net, ns41.worldwidedns.net, ns42.worldwidedns.net, ns43.worldwidedns.net and ns44.worldwidedns.net.
Host names with two IP numbers:
ns1.worldwidedns.net points to 2001:4802:7a61:501:2422:918:2689:75fc and 207.97.208.112; ns2.worldwidedns.net points to 2a06:fb00:1::2:115 and 185.136.97.115; ns3.worldwidedns.net points to 2a06:fb00:1::3:115 and 185.136.98.115.
Mail Servers
isu.org is handled by a single mail server, mailfilter.evok.ch.
isu.org uses the same mail server setup as other domains, for instance fonpro.ch, airgroup.ch, fly7.com, ssc.ch and htsch.com.
mailfilter.evok.ch resolves to two IPs: 185.122.238.201 and 193.33.30.81.