`sefutech.com`

DNSSEC	⚠️ Not signed
NS	`herbert.dnspod.net` ⭐
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	1.14.119.35^{🇨🇳 TENCENT-NET-AP1.14.64.0/18}
		A	111.13.13.35^{🇨🇳 CHINAMOBILE-CN111.13.0.0/16 CMI (Customer Route)}
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
NS	`bruce.dnspod.net`
		A	2402:4e00:111:fff::c^{🇨🇳 TENCENT-NET-AP2402:4e00::/35}
		A	1.12.0.1^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.176^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	101.227.168.35^{🇨🇳 SHANGHAITELECOM101.227.168.0/23 SHIDC}
		A	111.206.98.235^{🇨🇳 CHINA169-BJ111.206.98.0/24}
		A	129.211.176.239^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
MX	`mx1.feishu.cn` ⭐
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
MX	`mx2.feishu.cn`⁽⁵⁾
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
MX	`mx3.feishu.cn`⁽¹⁰⁾
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
TXT	`v=spf1 +include:_netblocks.m.feishu.cn -all`
TXT	`verification-code-site-App_feishu=Vtz80SEmtDLVjRJr6xbd`
SOA	`herbert.dnspod.net`freednsadmin@dnspod.com serial=1772095938

`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=1774722637

Same first word

sefutech.com

Similar names

DNS History

5 records (5 active, 0 former)

●NSbruce.dnspod.net2026-03-26 → 2026-03-28 · 2 obs

● 2026-03-26 04:27:58
● 2026-03-28 18:41:22

●NSherbert.dnspod.net2026-03-26 → 2026-03-28 · 2 obs

● 2026-03-26 04:27:58
● 2026-03-28 18:41:22

●MXmx1.feishu.cn2026-03-26 → 2026-03-28 · 2 obs

● 2026-03-26 04:27:58
● 2026-03-28 18:41:22

●MXmx2.feishu.cn2026-03-26 → 2026-03-28 · 2 obs

● 2026-03-26 04:27:58
● 2026-03-28 18:41:22

●MXmx3.feishu.cn2026-03-26 → 2026-03-28 · 2 obs

● 2026-03-26 04:27:58
● 2026-03-28 18:41:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, a.gtld-servers.net, e.gtld-servers.net, b.gtld-servers.net...	-
sefutech.com	herbert.dnspod.net, bruce.dnspod.net	-

✅ Authoritative Response

Server:36.155.149.176

NS records: herbert.dnspod.net, bruce.dnspod.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sefutech.com (unsigned zone)

⏱️ Timing

Total: 675ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`bruce.dnspod.net, herbert.dnspod.net`
MX	3	`mx1.feishu.cn (pri: 1), mx2.feishu.cn (pri: 5)...`
TXT	2	`v=spf1 +include:_netblocks.m.feishu.cn -, verification-code-site-App_feishu=Vtz80S`
SOA	1	`herbert.dnspod.net freednsadmin.dnspod.c`

Analysis

Name Servers

sefutech.com is delegated to two name servers: bruce.dnspod.net and herbert.dnspod.net.

sefutech.com uses the same name server setup as other domains such as chennn.com, hbyaso.com, cmg.mobi, everstars.com and yinu.net.

sefutech.com shares name servers with other domains at least partially, for example macrjy.com.

Host names with six IP numbers: host name bruce.dnspod.net points to: 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 101.227.168.35, 111.206.98.235 and 129.211.176.239; host name herbert.dnspod.net points to: 2402:4e00:1470:2::e, 1.12.0.4, 1.14.119.35, 111.13.13.35, 112.80.181.45 and 117.89.178.173.

Mail Servers

sefutech.com is served by three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.

sefutech.com shares mail servers with other domains at least partially; for instance aladinfun.com, funnygiftss.com, autocard.me, shi.la and ninjutso.com.