`bldbuy.com`

DNSSEC	⚠️ Not signed
A	39.105.209.240^{🇨🇳 Alibaba-Cloud39.104.0.0/15 CT BeiJing IDC}
NS	`vip3.alidns.com` ⭐
		A	2408:4009:500::3^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.3^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.5^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.210^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.40.136^{🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.26^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.10^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
NS	`vip4.alidns.com`
		A	2408:4009:500::4^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.4^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.6^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.211^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.40.137^{🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.27^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.11^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
MX	`mxn.mxhichina.com` ⭐
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`ip-47-246-137-47.defastlink.net`
MX	`mxw.mxhichina.com`⁽¹⁰⁾
		A	47.246.99.195^{🇺🇸 Alibaba-Cloud47.246.96.0/22 Proxy-registered route object}
			PTR	`reachsmartdwell.com`
TXT	`v=spf1 include:spf.mxhichina.com ~all`
SOA	`vip3.alidns.com`hostmaster@hichina.com 2025-12-11 #12

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291435

Same first word

bldbuy.com

DNS History

9 records (5 active, 4 former)

○NSdns21.hichina.com2015-05-05 → 2017-01-18 · 4 obs

● 2015-05-05 02:53:42
● 2017-01-18 14:40:36
○ 2018-01-09 09:55:30
○ 2026-03-24 06:25:08

○NSdns22.hichina.com2015-05-05 → 2017-01-18 · 4 obs

● 2015-05-05 02:53:42
● 2017-01-18 14:40:36
○ 2018-01-09 09:55:30
○ 2026-03-24 06:25:08

○NSvip1.alidns.com2018-01-09 → 2018-01-09 · 4 obs

○ 2017-01-18 14:40:36
● 2018-01-09 09:55:30
○ 2026-03-12 10:28:24
○ 2026-03-24 06:25:08

○NSvip2.alidns.com2018-01-09 → 2018-01-09 · 4 obs

○ 2017-01-18 14:40:36
● 2018-01-09 09:55:30
○ 2026-03-12 10:28:24
○ 2026-03-24 06:25:08

●NSvip3.alidns.com2026-03-12 → 2026-03-24 · 3 obs

○ 2018-01-09 09:55:30
● 2026-03-12 10:28:24
● 2026-03-24 06:25:08

●NSvip4.alidns.com2026-03-12 → 2026-03-24 · 3 obs

○ 2018-01-09 09:55:30
● 2026-03-12 10:28:24
● 2026-03-24 06:25:08

●MXmxn.mxhichina.com2016-05-01 → 2026-03-24 · 2 obs

● 2016-05-01 19:44:42
● 2026-03-24 06:25:08

●MXmxw.mxhichina.com2016-05-01 → 2026-03-24 · 2 obs

● 2016-05-01 19:44:42
● 2026-03-24 06:25:08

●A39.105.209.2402026-03-12 → 2026-03-24 · 2 obs

● 2026-03-12 10:28:24
● 2026-03-24 06:25:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
bldbuy.com	vip3.alidns.com, vip4.alidns.com	22 records

✅ Authoritative Response

Server:121.40.6.163

NS records: vip3.alidns.com, vip4.alidns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bldbuy.com (unsigned zone)

⏱️ Timing

Total: 520ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`39.105.209.240`
NS	2	`vip3.alidns.com, vip4.alidns.com`
MX	2	`mxn.mxhichina.com (pri: 5), mxw.mxhichina.com (pri: 10)`
TXT	1	`v=spf1 include:spf.mxhichina.com ~all`
SOA	1	`vip3.alidns.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 22

Out-of-bailiwick: 22 (vip3.alidns.com, vip3.alidns.com, vip3.alidns.com...)

Analysis

IP Addresses

bldbuy.com maps to IP address 39.105.209.240.

Name Servers

Two name servers vip3.alidns.com and vip4.alidns.com are delegated to bldbuy.com.

bldbuy.com uses the same name server configuration as other domains, such as 99topchoice.com, gwcloudcdn.com, bluefire.top, ezone.work and ganten.com.cn.

bldbuy.com shares name servers with other domains at least partially, for instance eeka.cn and lvjusoft.com.

Host names with seven IP numbers:

The host name vip3.alidns.com points to 2408:4009:500::3, 8.212.93.3, 140.205.1.5, 170.33.32.210, 170.33.40.136, 170.33.73.26 and 170.33.80.10.

The host name vip4.alidns.com points to 2408:4009:500::4, 8.212.93.4, 140.205.1.6, 170.33.32.211, 170.33.40.137, 170.33.73.27 and 170.33.80.11.

Pattern: seven IP numbers per host, each list increases by 3.

Mail Servers

Two mail servers handle bldbuy.com: mxn.mxhichina.com and mxw.mxhichina.com.

bldbuy.com shares the same mail server setup as other domains, including qili-spraybooth.com, apsfon.com, wayfair.ltd, vicsdf.com and alkmand.com.

bldbuy.com shares mail servers with other domains at least in part, for instance wosft.com, witeem.com, initap.com, fastturnchip.com and dyli.cn.

these mail servers are often used together with mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

Host names by IP count:

Two IP numbers: The host name mxn.mxhichina.com points to 47.246.136.231 and 47.246.137.47.

One IP number: The host name mxw.mxhichina.com points to 47.246.99.195.

bldbuy.com - robtex.com

bldbuy.com

com