91school.com - dns.ninja
91school.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 167.88.180.121🇨🇦 VMISS167.88.180.0/24 KURUN CLOUD INC | ||||||
| NS | ns1.dnbiz.com ⚠️ Not in zone NS records | ||||||
| NS | ns2.dnbiz.com ⚠️ Not in zone NS records | ||||||
| MX | mail.happyisp.com ⭐ | ||||||
| A | 5.161.49.68🇺🇸 HETZNER-CLOUD2-AS5.161.49.0/24 | ||||||
| PTR | mail.happyisp.com | ||||||
| A | 137.184.158.105🇺🇸 DIGITALOCEAN137.184.144.0/20 DigitalOcean | ||||||
| PTR | mail.happyisp.com | ||||||
| TXT | v=spf1 ip6:fd0d:d741:e183::/48 -all | ||||||
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=1783858882 | ||||||
Same first word
91school.com |
Similar names
DNS History
11 records (4 active, 7 former)
●MXmail.happyisp.com2026-03-06 → 2026-07-12 · 3 obs
● 2026-03-06 01:45:48
● 2026-07-12 12:31:56
○MXmail.skrimple.com2015-06-16 → 2017-03-27 · 4 obs
● 2017-03-27 16:18:46
○ 2026-03-06 01:45:48
○ 2026-07-12 12:31:56
○A103.51.144.812016-07-19 → 2017-03-27 · 5 obs
● 2016-07-19 09:15:26
● 2017-03-27 16:18:46
○ 2020-02-04 10:03:00
○ 2026-07-12 12:31:56
○A127.0.0.12026-03-06 → 2026-03-31 · 5 obs
● 2026-03-06 01:45:48
● 2026-03-31 05:29:10
○ 2026-04-26 05:11:40
○ 2026-07-12 12:31:56
○A13.124.227.1132020-02-04 → 2020-02-04 · 4 obs
● 2020-02-04 10:03:00
○ 2026-03-06 01:45:48
○ 2026-07-12 12:31:56
○A162.218.54.422015-06-16 → 2015-06-16 · 3 obs
○ 2015-10-28 21:26:30
○ 2026-07-12 12:31:56
●A167.88.180.1212026-04-26 → 2026-07-12 · 4 obs
○ 2026-03-31 05:29:10
● 2026-04-26 05:11:40
● 2026-07-12 12:31:56
○A198.12.15.2442015-06-16 → 2015-06-16 · 3 obs
○ 2015-10-28 21:26:30
○ 2026-07-12 12:31:56
○A65.19.157.2352015-10-28 → 2016-01-18 · 5 obs
● 2015-10-28 21:26:30
● 2016-01-18 19:47:12
○ 2016-07-19 09:15:26
○ 2026-07-12 12:31:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net, e.gtld-servers.net... | - |
| 91school.com | ns1.dnbiz.com, ns2.dnbiz.com | 2 records |
✅ Authoritative Response
Server:38.55.118.226
NS records: ns1.dnbiz.com, ns2.dnbiz.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 91school.com (unsigned zone)
⏱️ Timing
Total: 752ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 167.88.180.121 |
| MX | 1 | mail.happyisp.com (pri: 1) |
| TXT | 1 | v=spf1 ip6:fd0d:d741:e183::/48 -all |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.dnbiz.com, ns2.dnbiz.com)
Analysis
IP Addresses
91school.com points to a single IP number: 167.88.180.121.
Additional host names — fayuxi.com, 44869.com, cbhk.com and two others — share IP numbers with 91school.com.
Name Servers
91school.com is delegated to two name servers: ns1.dnbiz.com and ns2.dnbiz.com.
91school.com shares its name server setup with other domains, including 12tp.com, biesao.com, woface.com and two others.
At least some of 91school.com's name servers are shared with other domains, for example americanbtu.com and japanbtu.com.
It is common for these name servers to be used in conjunction with the name servers a.misconfigured.powerdns.server, dns1.marksmile.com and dns2.marksmile.com.
Mail Servers
91school.com has one mail server: mail.happyisp.com.
91school.com shares the same mail server setup as other domains, including also.net, nengbao.cn, yjzz.com and two others.
mail.happyisp.com directs to two IP numbers, 5.161.49.68 and 137.184.158.105.