`web.cdn.ctdisk.com`

CNAME	`web.cdn.ctfile.com`
DNSSEC	⚠️ Not signed
A	54.248.138.103^{🇯🇵 Amazon54.248.128.0/17 EC2 NRT prefix}
		PTR	`ec2-54-248-138-103.ap-northeast-1.compute.amazonaws.com`
A	54.248.203.180^{🇯🇵 Amazon54.248.128.0/17 EC2 NRT prefix}

`cdn.ctdisk.com`

	CNAME	`web.cdn.ctfile.com`
	DNSSEC	⚠️ Not signed
	A	54.248.138.103^{🇯🇵 Amazon54.248.128.0/17 EC2 NRT prefix}
	A	54.248.203.180^{🇯🇵 Amazon54.248.128.0/17 EC2 NRT prefix}

WOT: SAFE (65/100)
WOT: SAFE (77/100)

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DNS History

5 records (1 active, 4 former)

○A110.34.178.1942013-03-29 → 2013-03-29 · 2 obs

● 2013-03-29 04:25:16
○ 2026-04-28 00:17:02

○A115.239.250.1342013-03-29 → 2013-03-29 · 3 obs

● 2013-03-29 04:25:16
○ 2016-01-11 17:05:36
○ 2026-04-28 00:17:02

○A49.213.12.942016-01-11 → 2016-01-13 · 4 obs

○ 2013-03-29 04:25:16
● 2016-01-11 17:05:36
● 2016-01-13 08:37:36
○ 2026-04-28 00:17:02

○CNAMEhk.cdn.ctdisk.com2016-01-11 → 2016-01-13 · 3 obs

● 2016-01-11 17:05:36
● 2016-01-13 08:37:36
○ 2026-04-28 00:17:02

●CNAMEweb.cdn.ctfile.com2026-04-28 → 2026-04-28 · 2 obs

○ 2016-01-13 08:37:36
● 2026-04-28 00:17:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ctdisk.com	dns3.hichina.com, dns4.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.44

NS records: dns3.hichina.com, dns4.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctdisk.com (unsigned zone)

⏱️ Timing

Total: 893ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`web.cdn.ctfile.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns3.hichina.com, dns3.hichina.com, dns3.hichina.com...)

Analysis

IP Addresses

web.cdn.ctdisk.com points to two IP numbers: 54.248.138.103 and 54.248.203.180.

Other host names, for instance hk2.cdn.web.ctfile.net, ec2-54-248-138-103.ap-northeast-1.compute.amazonaws.com, ec2-54-248-203-180.ap-northeast-1.compute.amazonaws.com, web.cdn.ctfile.com and directlink.gbcache.ctfile.net share IP numbers with web.cdn.ctdisk.com.

web.cdn.ctdisk.com - robtex.com