cedu.io - robtex.com

cedu.io

DNSSEC⚠️ Not signed
NSns1.dnsimple.com ⚠️ Not in zone NS records
A2620:111:8004::53🇺🇸 AS327712620:111:8004::/48 DNSimple Corporation
A199.247.152.53🇺🇸 AS32771199.247.152.0/24 DNSimple Corporation
NSns2.dnsimple.com ⚠️ Not in zone NS records
A2620:111:8005::53🇺🇸 AS327712620:111:8005::/48 Vultr Customer Route
A199.247.153.53🇺🇸 AS32771199.247.153.0/24 Vultr Customer Route
NSns3.dnsimple.com ⚠️ Not in zone NS records
A2620:111:8006::53🇺🇸 AS327712620:111:8006::/48 DNSimple Corporation
A199.247.154.53🇺🇸 AS32771199.247.154.0/24 DNSimple Corporation
NSns4.dnsimple.com ⚠️ Not in zone NS records
A2620:111:8007::53🇺🇸 AS327712620:111:8007::/48 Vultr Customer Route
A199.247.155.53🇺🇸 AS32771199.247.155.0/24 Vultr Customer Route

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1786099610

Same first word

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DNS History

13 records (4 active, 9 former)

20192020202120222023202420252026NSns1.dnsimple.comns2.dnsimple.comns3.dnsimple.comns4.dnsimple.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comcedu-io.mail.protection.outlook.comA167.99.17.74188.166.203.693.13.31.214
●NSns1.dnsimple.com2018-05-08 → 2026-08-07 · 2 obs
● 2018-05-08 05:07:32
● 2026-08-07 11:25:18
●NSns2.dnsimple.com2018-05-08 → 2026-08-07 · 2 obs
● 2018-05-08 05:07:32
● 2026-08-07 11:25:18
●NSns3.dnsimple.com2018-05-08 → 2026-08-07 · 2 obs
● 2018-05-08 05:07:32
● 2026-08-07 11:25:18
●NSns4.dnsimple.com2018-05-08 → 2026-08-07 · 2 obs
● 2018-05-08 05:07:32
● 2026-08-07 11:25:18
○MXalt1.aspmx.l.google.com2018-05-08 → 2021-06-14 · 4 obs
● 2018-05-08 05:07:32
● 2021-06-14 04:43:16
○ 2026-07-20 07:57:48
○ 2026-08-07 11:25:18
○MXalt2.aspmx.l.google.com2018-05-08 → 2021-06-14 · 4 obs
● 2018-05-08 05:07:32
● 2021-06-14 04:43:16
○ 2026-07-20 07:57:48
○ 2026-08-07 11:25:18
○MXalt3.aspmx.l.google.com2018-05-08 → 2021-06-14 · 4 obs
● 2018-05-08 05:07:32
● 2021-06-14 04:43:16
○ 2026-07-20 07:57:48
○ 2026-08-07 11:25:18
○MXalt4.aspmx.l.google.com2018-05-08 → 2021-06-14 · 4 obs
● 2018-05-08 05:07:32
● 2021-06-14 04:43:16
○ 2026-07-20 07:57:48
○ 2026-08-07 11:25:18
○MXaspmx.l.google.com2018-05-08 → 2021-06-14 · 4 obs
● 2018-05-08 05:07:32
● 2021-06-14 04:43:16
○ 2026-07-20 07:57:48
○ 2026-08-07 11:25:18
○MXcedu-io.mail.protection.outlook.com2018-05-08 → 2021-06-14 · 4 obs
● 2018-05-08 05:07:32
● 2021-06-14 04:43:16
○ 2026-07-20 07:57:48
○ 2026-08-07 11:25:18
○A167.99.17.742018-05-08 → 2018-05-08 · 3 obs
● 2018-05-08 05:07:32
○ 2026-07-20 07:57:48
○ 2026-08-07 11:25:18
○A188.166.203.692018-05-08 → 2018-05-08 · 3 obs
● 2018-05-08 05:07:32
○ 2021-06-14 04:43:16
○ 2026-08-07 11:25:18
○A3.13.31.2142021-06-14 → 2021-06-14 · 4 obs
○ 2018-05-08 05:07:32
● 2021-06-14 04:43:16
○ 2026-07-20 07:57:48
○ 2026-08-07 11:25:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioc0.nic.io, a0.nic.io, a2.nic.io, b0.nic.io-
cedu.ions4.dnsimple.com, ns3.dnsimple.com, ns1.dnsimple.com, ns2.dnsimple.com-

✅ Authoritative Response

Server:199.247.155.53

NS records: ns4.dnsimple.com, ns3.dnsimple.com, ns1.dnsimple.com, ns2.dnsimple.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cedu.io (unsigned zone)

⏱️ Timing

Total: 400ms | Queries: -

📄 Records

TypeCountSample Data

Analysis

Name Servers

The authoritative name servers for cedu.io are ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com and ns4.dnsimple.com.

There is at least partial name server overlap between cedu.io and other domains — buildhyper.com, acas-ong.org, thermando.com and two more among them.

These name servers frequently co-occur with the name servers ns4.dnsimple-edge.org and ns2.dnsimple-edge.net.

All four hostnames — ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com and ns4.dnsimple.com — resolve to two IP numbers apiece: ns1.dnsimple.com to 199.247.152.53 and 2620:111:8004::53; ns2.dnsimple.com to 199.247.153.53 and 2620:111:8005::53; ns3.dnsimple.com to 199.247.154.53 and 2620:111:8006::53; ns4.dnsimple.com to 199.247.155.53 and 2620:111:8007::53.