91school.com - dns.ninja

91school.com

DNSSEC⚠️ Not signed
A167.88.180.121🇨🇦 VMISS167.88.180.0/24 KURUN CLOUD INC
NSns1.dnbiz.com ⚠️ Not in zone NS records
NSns2.dnbiz.com ⚠️ Not in zone NS records
MXmail.happyisp.com
A5.161.49.68🇺🇸 HETZNER-CLOUD2-AS5.161.49.0/24
PTRmail.happyisp.com
A137.184.158.105🇺🇸 DIGITALOCEAN137.184.144.0/20 DigitalOcean
PTRmail.happyisp.com
TXTv=spf1 ip6:fd0d:d741:e183::/48 -all

com

Same first word

Similar names

DNS History

11 records (4 active, 7 former)

20162017201820192020202120222023202420252026NSns1.dnbiz.comns2.dnbiz.comMXmail.happyisp.commail.skrimple.comA167.88.180.121103.51.144.81127.0.0.113.124.227.113162.218.54.42198.12.15.24465.19.157.235
NSns1.dnbiz.com2026-03-06 → 2026-07-12 · 2 obs
● 2026-03-06 01:45:48
● 2026-07-12 12:31:56
NSns2.dnbiz.com2026-03-06 → 2026-07-12 · 2 obs
● 2026-03-06 01:45:48
● 2026-07-12 12:31:56
MXmail.happyisp.com2026-03-06 → 2026-07-12 · 3 obs
○ 2017-03-27 16:18:46
● 2026-03-06 01:45:48
● 2026-07-12 12:31:56
MXmail.skrimple.com2015-06-16 → 2017-03-27 · 4 obs
● 2015-06-16 05:36:14
● 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
○ 2016-01-18 19:47:12
● 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
○ 2020-02-04 10:03:00
● 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
○ 2017-03-27 16:18:46
● 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
● 2015-06-16 05:36:14
○ 2015-10-28 21:26:30
○ 2026-07-12 12:31:56
A167.88.180.1212026-04-26 → 2026-07-12 · 4 obs
○ 2026-03-06 01:45:48
○ 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
● 2015-06-16 05:36:14
○ 2015-10-28 21:26:30
○ 2026-07-12 12:31:56
A65.19.157.2352015-10-28 → 2016-01-18 · 5 obs
○ 2015-06-16 05:36:14
● 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

ZoneNameserversGlue
comb.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net, e.gtld-servers.net...-
91school.comns1.dnbiz.com, ns2.dnbiz.com2 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

TypeCountSample Data
A1167.88.180.121
MX1mail.happyisp.com (pri: 1)
TXT1v=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.