sff-learn.com - robtex.com
sff-learn.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | 01.dnsv.jp ⭐ | ||||||
| A | 2400:8500:3300::53🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc. | ||||||
| PTR | 01.dnsv.jp | ||||||
| A | 157.7.32.53🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 01.dnsv.jp | ||||||
| NS | 02.dnsv.jp | ||||||
| A | 157.7.33.53🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 02.dnsv.jp | ||||||
| NS | 03.dnsv.jp | ||||||
| A | 2400:8500:3000::53🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc. | ||||||
| PTR | 03.dnsv.jp | ||||||
| A | 157.7.34.53🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 03.dnsv.jp | ||||||
| NS | 04.dnsv.jp | ||||||
| A | 2400:8500:3fff::53🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc. | ||||||
| PTR | 04.dnsv.jp | ||||||
| A | 157.7.35.53🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team. | ||||||
| PTR | 04.dnsv.jp | ||||||
| SOA | 01.dnsv.jphostmaster@dnsv.jp serial=1744353145 | ||||||
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=1776047547 | ||||||
Same first word
sff-learn.com |
Similar names
DNS History
7 records (4 active, 3 former)
○NSdns1.onamae.com2018-11-23 → 2018-11-23 · 2 obs
● 2018-11-23 11:09:54
○ 2026-04-13 03:01:38
○ 2026-04-13 03:01:38
○NSdns2.onamae.com2018-11-23 → 2018-11-23 · 2 obs
● 2018-11-23 11:09:54
○ 2026-04-13 03:01:38
○ 2026-04-13 03:01:38
○A150.95.255.382018-11-23 → 2018-11-23 · 2 obs
● 2018-11-23 11:09:54
○ 2026-04-13 03:01:38
○ 2026-04-13 03:01:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| sff-learn.com | 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp | - |
✅ Authoritative Response
Server:157.7.34.53
NS records: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp, 04.dnsv.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sff-learn.com (unsigned zone)
⏱️ Timing
Total: 532ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | 01.dnsv.jp, 02.dnsv.jp... |
| SOA | 1 | 01.dnsv.jp hostmaster.dnsv.jp |
Analysis
Name Servers
sff-learn.com is delegated to four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.
sff-learn.com at least partially shares name servers with other domains, for instance towa-sekizai.jp, brazilmizugi.com, mobileworld.jp, ifbningotnbaku.net and yogurtg.com.
Two IPs for hosts:
01.dnsv.jp points to: 2400:8500:3300::53 and 157.7.32.53
03.dnsv.jp points to: 2400:8500:3000::53 and 157.7.34.53
04.dnsv.jp points to: 2400:8500:3fff::53 and 157.7.35.53
One IP for a host:
02.dnsv.jp points to: 157.7.33.53