ciena.tw - robtex.com

ciena.tw

DNSSEC⚠️ Not signed
NSns2.ciena.com ⚠️ Not in zone NS records
A52.242.98.143🇺🇸 Microsoft52.224.0.0/11 MICROSOFT
NSns4.ciena.com ⚠️ Not in zone NS records
A40.89.253.123🇺🇸 Microsoft40.80.0.0/12

tw

DNSSEC🔒 Signed (DS record present)
NSa.dns.tw ⭐
NSanytld.apnic.net ⚠️ Not in parent delegation
NSb.dns.tw
NSc.dns.tw
NSd.dns.tw
NSe.dns.tw
NSf.dns.tw
NSg.dns.tw
NSh.dns.tw
SOAa.dns.twsnw@twnic.net.tw serial=2011033976

Same first word

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acein.com
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icnea.org
caine.co
cinea.fr
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eniac.sk
caine.nl
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DNS History

2 records (2 active, 0 former)

NSns2.ciena.comns4.ciena.com
●NSns2.ciena.com2026-07-08 → 2026-07-15 · 2 obs
● 2026-07-08 12:08:44
● 2026-07-15 02:20:38
●NSns4.ciena.com2026-07-08 → 2026-07-15 · 2 obs
● 2026-07-08 12:08:44
● 2026-07-15 02:20:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
twa.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...16 records
ciena.twns4.ciena.com, ns2.ciena.com-

✅ Authoritative Response

Server:40.89.253.123

NS records: ns4.ciena.com, ns2.ciena.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ciena.tw (unsigned zone)

⏱️ Timing

Total: 1517ms | Queries: -

📄 Records

TypeCountSample Data

📌 Glue Records Collected

Total: 16

In-bailiwick: 14 (a.dns.tw, b.dns.tw, c.dns.tw...)

Out-of-bailiwick: 2 (anytld.apnic.net, anytld.apnic.net)

Analysis

Name Servers

ciena.tw is delegated to two name servers: ns2.ciena.com and ns4.ciena.com.

The name server configuration of ciena.tw is shared with other domains, for instance cienastinks.com, cienalearning.com, ciena.net and two others.

ciena.tw shares at least some of its name servers with other domains, including ciena.kr, ciena.de, ciena.ch and two others.

These name servers tend to appear together with the name servers cfns1.cienans.com, cfns2.cienans.com and ns0111.secondary.cloudflare.com, plus two others.

ns2.ciena.com and ns4.ciena.com each resolve to one IP number: ns2.ciena.com points to 52.242.98.143 and ns4.ciena.com points to 40.89.253.123.