`mail.sdh-hyd.com`

	CNAME	`mm.263.com`
	DNSSEC	⚠️ Not signed
	A	211.150.64.54^{🇨🇳 CHINA-1211.150.64.0/20 China Telecom Beijing Co. Ltd.}

`sdh-hyd.com`

	DNSSEC	⚠️ Not signed
	NS	`dns31.hichina.com` ⭐
	NS	`dns32.hichina.com`
	MX	`mx.263.net` ⭐
	MX	`mxw.263.net` ⭐
	TXT	`v=spf1 include:spf.263.net -all`
	SOA	`dns31.hichina.com`hostmaster@hichina.com 2026-01-12 #9

Previously MX for

sdh-hyd.com

Same first word

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mail.cd

mail.in.ua

mail.cx

mail.gm

mail.su

mail.toshiba

mail.hosting

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mail.fm

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mail.pictures

mail.gov.kg

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mail.hk

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DNS History

4 records (1 active, 3 former)

○A202.108.35.2252015-06-28 → 2016-04-23 · 4 obs

● 2015-06-28 21:54:46
● 2016-04-23 18:24:36
○ 2016-10-04 15:45:34
○ 2026-04-14 05:57:30

○A202.108.7.2542016-10-04 → 2016-10-04 · 4 obs

○ 2016-04-23 18:24:36
● 2016-10-04 15:45:34
○ 2026-04-14 05:57:28
○ 2026-04-14 05:57:30

●CNAMEmm.263.com2026-04-14 → 2026-04-14 · 3 obs

○ 2016-11-17 18:22:32
● 2026-04-14 05:57:28
● 2026-04-14 05:57:30

○CNAMEmx.sina.net2015-06-28 → 2016-11-17 · 5 obs

○ 2008-03-20 07:02:52
● 2015-06-28 21:54:46
● 2016-11-17 18:22:32
○ 2026-04-14 05:57:28
○ 2026-04-14 05:57:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, i.gtld-servers.net, e.gtld-servers.net, b.gtld-servers.net...	-
sdh-hyd.com	dns31.hichina.com, dns32.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.39

NS records: dns31.hichina.com, dns32.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sdh-hyd.com (unsigned zone)

⏱️ Timing

Total: 3500ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`mm.263.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns31.hichina.com, dns31.hichina.com, dns31.hichina.com...)

Analysis

IP Addresses

mail.sdh-hyd.com resolves to one IP number: 211.150.64.54.

other host names including mail.tstc.edu.cn, qiye.263.net, mail.fatin.com, mm.ismail.cn and mail.ismail.cn share IP numbers with mail.sdh-hyd.com.

mail.sdh-hyd.com - robtex.com

mail.sdh-hyd.com

sdh-hyd.com