nknow.com - robtex.com
nknow.com
com
| 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=1775972022 | ||||||
PTR for
Previously MX for
nknow.com |
Same first word
nknow.com |
Similar names
DNS History
9 records (6 active, 3 former)
○NSns3.sphere.ad.jp2015-07-11 → 2018-11-18 · 4 obs
● 2018-11-18 05:37:50
○ 2026-04-09 16:50:04
○ 2026-04-12 05:52:46
○NSns4.sphere.ad.jp2015-07-11 → 2018-11-18 · 4 obs
● 2018-11-18 05:37:50
○ 2026-04-09 16:50:04
○ 2026-04-12 05:52:46
●NSskydns11.otsuka-office365.jp2026-04-09 → 2026-04-12 · 3 obs
● 2026-04-09 16:50:04
● 2026-04-12 05:52:46
●NSskydns12.otsuka-office365.jp2026-04-09 → 2026-04-12 · 3 obs
● 2026-04-09 16:50:04
● 2026-04-12 05:52:46
●NSskydns13.otsuka-office365.jp2026-04-09 → 2026-04-12 · 3 obs
● 2026-04-09 16:50:04
● 2026-04-12 05:52:46
●NSskydns99.otsuka-office365.jp2026-04-09 → 2026-04-12 · 3 obs
● 2026-04-09 16:50:04
● 2026-04-12 05:52:46
●MXnknow-com.mail.protection.outlook.com2026-04-09 → 2026-04-12 · 3 obs
● 2026-04-09 16:50:04
● 2026-04-12 05:52:46
○MXnknow.com2015-07-11 → 2018-11-18 · 4 obs
● 2018-11-18 05:37:50
○ 2026-04-09 16:50:04
○ 2026-04-12 05:52:46
●A119.245.207.1122015-07-11 → 2026-04-12 · 2 obs
● 2026-04-12 05:52:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, g.gtld-servers.net, e.gtld-servers.net, c.gtld-servers.net... | - |
| nknow.com | skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp | - |
✅ Authoritative Response
Server:157.205.203.141
NS records: skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for nknow.com (unsigned zone)
⏱️ Timing
Total: 966ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 119.245.207.112 |
| NS | 3 | skydns11.otsuka-office365.jp, skydns13.otsuka-office365.jp... |
| MX | 1 | nknow-com.mail.protection.outlook.com (p |
| TXT | 2 | MS=ms36410876, v=spf1 include:spf.spcloud.jp include:sp |
| SOA | 1 | skydns99.otsuka-office365.jp hostmaster. |
Analysis
IP Addresses
nknow.com resolves to one IP number: 119.245.207.112.
Name Servers
nknow.com is delegated to four name servers: skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp and skydns99.otsuka-office365.jp.
nknow.com at least partially shares name servers with other domains, for instance shigerubanarchitects.com, fgh.co.jp, datastadium.co.jp, nissan-gijutsu.co.jp and worldm.co.jp.
Host names with one IP number: skydns11.otsuka-office365.jp points to 157.205.203.141; skydns12.otsuka-office365.jp points to 157.205.160.35; skydns13.otsuka-office365.jp points to 157.205.160.51; skydns99.otsuka-office365.jp points to 157.205.203.139.
Mail Servers
nknow.com is handled by a single mail server, nknow-com.mail.protection.outlook.com.
Host nknow-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:cc1a::, 2a01:111:f403:cc1a::1, 2a01:111:f403:cc1a::2, 2a01:111:f403:cc24::, 52.101.124.5, 52.101.124.6, 52.101.157.10 and 52.101.157.40.