`bt581.com`

DNSSEC	⚠️ Not signed
NS	`dns17.hichina.com` ⭐ ⚠️ Not in parent delegation
		A	2408:4009:501::25^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.100^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.110^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns18.hichina.com` ⚠️ Not in parent delegation
		A	2408:4009:501::26^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.98^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.108^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns19.hichina.com` ⚠️ Not in zone NS records
		A	2408:4009:501::27^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.100^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.110^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns20.hichina.com` ⚠️ Not in zone NS records
		A	2408:4009:501::28^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.98^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.108^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com` ⭐
SOA	`dns17.hichina.com`hostmaster@hichina.com 2026-01-09 #13

`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=1776130282

Same first word

bt581.com

Similar names

bt518.com

bt185.de

bt158.cn

518bt.com

DNS History

8 records (6 active, 2 former)

●NSdns17.hichina.com2026-04-08 → 2026-04-14 · 3 obs

○ 2018-11-14 21:33:54
● 2026-04-08 11:13:44
● 2026-04-14 01:48:16

●NSdns18.hichina.com2026-04-08 → 2026-04-14 · 3 obs

○ 2018-11-14 21:33:54
● 2026-04-08 11:13:44
● 2026-04-14 01:48:16

●NSdns19.hichina.com2026-04-08 → 2026-04-14 · 3 obs

○ 2018-11-14 21:33:54
● 2026-04-08 11:13:44
● 2026-04-14 01:48:16

●NSdns20.hichina.com2026-04-08 → 2026-04-14 · 3 obs

○ 2018-11-14 21:33:54
● 2026-04-08 11:13:44
● 2026-04-14 01:48:16

○NSns11.xincache.com2018-11-14 → 2018-11-14 · 3 obs

● 2018-11-14 21:33:54
○ 2026-04-08 11:13:44
○ 2026-04-14 01:48:16

○NSns12.xincache.com2018-11-14 → 2018-11-14 · 3 obs

● 2018-11-14 21:33:54
○ 2026-04-08 11:13:44
○ 2026-04-14 01:48:16

●MXmxbiz1.qq.com2026-04-08 → 2026-04-14 · 2 obs

● 2026-04-08 11:13:44
● 2026-04-14 01:48:16

●MXmxbiz2.qq.com2026-04-08 → 2026-04-14 · 2 obs

● 2026-04-08 11:13:44
● 2026-04-14 01:48:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
bt581.com	dns19.hichina.com, dns20.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.38

NS records: dns19.hichina.com, dns20.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bt581.com (unsigned zone)

⏱️ Timing

Total: 590ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns18.hichina.com, dns17.hichina.com`
MX	2	`mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 5)`
SOA	1	`dns17.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns19.hichina.com, dns19.hichina.com, dns19.hichina.com...)

Analysis

Name Servers

bt581.com is delegated to four name servers: dns17.hichina.com, dns18.hichina.com, dns19.hichina.com and dns20.hichina.com.

bt581.com at least partially shares name servers with other domains, including ephna.com, dianxiandianlanwang.com, fismid.com, iotantennas.com and remighty.com.

These name servers are commonly used with expirens3.hichina.com and expirens4.hichina.com.

Host names with nine IP numbers:

Host dns17.hichina.com points to: 2408:4009:501::25, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110.

Host dns19.hichina.com points to: 2408:4009:501::27, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110.

Host dns18.hichina.com points to: 2408:4009:501::26, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.

Host dns20.hichina.com points to: 2408:4009:501::28, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.

Notes on patterns:

dns17.hichina.com and dns19.hichina.com share eight targets: 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110; only 2408:4009:501::25 vs 2408:4009:501::27 differs.

dns18.hichina.com and dns20.hichina.com share the same nine targets: 2408:4009:501::28, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.

Host names that point to 39.96.153.40: dns17.hichina.com and dns19.hichina.com.

Host names that point to 39.96.153.60: dns17.hichina.com and dns19.hichina.com.

Host names that point to 47.118.199.200: dns17.hichina.com and dns19.hichina.com.

Host names that point to 47.118.199.220: dns17.hichina.com and dns19.hichina.com.

Host names that point to 120.76.107.40: dns17.hichina.com and dns19.hichina.com.

Host names that point to 120.76.107.60: dns17.hichina.com and dns19.hichina.com.

Host names that point to 139.224.142.100: dns17.hichina.com and dns19.hichina.com.

Host names that point to 139.224.142.110: dns17.hichina.com and dns19.hichina.com.

Host names that point to 39.96.153.38: dns18.hichina.com and dns20.hichina.com.

Host names that point to 39.96.153.61: dns18.hichina.com and dns20.hichina.com.

Host names that point to 47.118.199.198: dns18.hichina.com and dns20.hichina.com.

Host names that point to 47.118.199.222: dns18.hichina.com and dns20.hichina.com.

Host names that point to 120.76.107.38: dns18.hichina.com and dns20.hichina.com.

Host names that point to 120.76.107.61: dns18.hichina.com and dns20.hichina.com.

Host names that point to 139.224.142.98: dns18.hichina.com and dns20.hichina.com.

Host names that point to 139.224.142.108: dns18.hichina.com and dns20.hichina.com.

Mail Servers

bt581.com is handled by two mail servers: mxbiz1.qq.com and mxbiz2.qq.com.

bt581.com shares its mail server setup with other domains, including 183.cn, gtosmart.com, yinglaikonggu.com, mlgb.org and huaweipeixun.com.

bt581.com shares at least partially some mail servers with other domains, for instance channelwelkin.com, kktours.com.hk and jgjapp.com.

bt581.com - robtex.com

bt581.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Name Servers

Mail Servers

`bt581.com`

`com`