`sf-engineering.com`

DNSSEC	⚠️ Not signed
A	139.199.65.227^{🇨🇳 TENCENT-NET-AP139.199.64.0/23}
NS	`f1g1ns1.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	117.135.128.235^{🇨🇳 CHINAMOBILE-CN117.135.128.0/24 CMI (Customer Route)}
			PTR	`(root)`
		A	125.94.59.235^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	163.177.5.35^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
NS	`f1g1ns2.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	1.13.76.35^{🇨🇳 TENCENT-NET-AP1.13.64.0/18}
		A	36.155.149.35^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	101.227.168.35^{🇨🇳 SHANGHAITELECOM101.227.168.0/23 SHIDC}
		A	106.39.207.235^{🇨🇳 CHINA-1106.39.192.0/19 China Telecom Beijing Co. Ltd.}
		A	111.206.98.235^{🇨🇳 CHINA169-BJ111.206.98.0/24}
		A	220.196.136.35^{🇨🇳 UNICOM-SHFT-IDC220.196.136.0/24}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`f1g1ns1.dnspod.net`freednsadmin@dnspod.com serial=1512783739

`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

sf-engineering.de

sf-engineering.com

Similar names

fs-engineering.eu

fs-engineering.de

DNS History

8 records (5 active, 3 former)

●NSf1g1ns1.dnspod.net2018-12-13 → 2026-04-14 · 3 obs

○ 2016-10-15 16:18:30
● 2018-12-13 09:43:34
● 2026-04-14 01:37:54

●NSf1g1ns2.dnspod.net2018-12-13 → 2026-04-14 · 3 obs

○ 2016-10-15 16:18:30
● 2018-12-13 09:43:34
● 2026-04-14 01:37:54

○NSns1.crazydomains.com2015-05-25 → 2016-08-15 · 4 obs

● 2015-05-25 18:44:52
● 2016-08-15 14:03:12
○ 2016-10-15 16:18:30
○ 2026-04-14 01:37:54

○NSns2.crazydomains.com2015-05-25 → 2016-08-15 · 4 obs

● 2015-05-25 18:44:52
● 2016-08-15 14:03:12
○ 2016-10-15 16:18:30
○ 2026-04-14 01:37:54

●MXmxbiz1.qq.com2018-12-13 → 2026-04-14 · 2 obs

● 2018-12-13 09:43:34
● 2026-04-14 01:37:54

●MXmxbiz2.qq.com2018-12-13 → 2026-04-14 · 2 obs

● 2018-12-13 09:43:34
● 2026-04-14 01:37:54

●A139.199.65.2272018-12-13 → 2026-04-14 · 3 obs

○ 2016-10-15 16:18:30
● 2018-12-13 09:43:34
● 2026-04-14 01:37:54

○A203.170.80.2502015-05-25 → 2016-08-15 · 4 obs

● 2015-05-25 18:44:52
● 2016-08-15 14:03:12
○ 2016-10-15 16:18:30
○ 2026-04-14 01:37:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
sf-engineering.com	f1g1ns1.dnspod.net, f1g1ns2.dnspod.net	-

✅ Authoritative Response

Server:111.13.13.35

NS records: f1g1ns1.dnspod.net, f1g1ns2.dnspod.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sf-engineering.com (unsigned zone)

⏱️ Timing

Total: 644ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`139.199.65.227`
NS	2	`f1g1ns2.dnspod.net, f1g1ns1.dnspod.net`
MX	2	`mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10)`
TXT	1	`v=spf1 include:spf.mail.qq.com ~all`
SOA	1	`f1g1ns1.dnspod.net freednsadmin.dnspod.c`

Analysis

IP Addresses

sf-engineering.com points to a single IP number: 139.199.65.227.

Name Servers

sf-engineering.com is delegated to two name servers: f1g1ns1.dnspod.net and f1g1ns2.dnspod.net.

sf-engineering.com uses the same name server setup as other domains, for instance bitjimu.com, madaexpress.com, ykswwj.com, mailegou.com and dedeja.com.

sf-engineering.com shares name servers with other domains at least partially, for instance anjiale.com, wmmrq.icu, kraken5af44k24fwzohe6fvqfgxfsee4lgydb3ayzkfhlzqhuwlo33adonion.org, jchunuo.com and xiaoniu51.com.

these name servers are often used with a.dnspod.com, c.dnspod.com and b.dnspod.com.

Host names with eight IP numbers:

The host name f1g1ns2.dnspod.net points to: 2402:4e00:111:fff::c, 1.12.0.1, 1.13.76.35, 36.155.149.35, 101.227.168.35, 106.39.207.235, 111.206.98.235 and 220.196.136.35.

Host names with seven IP numbers:

The host name f1g1ns1.dnspod.net points to: 2402:4e00:1470:2::e, 1.12.0.4, 1.14.119.35, 111.13.13.35, 117.135.128.235, 125.94.59.235 and 163.177.5.35.

Mail Servers

sf-engineering.com is handled by two mail servers: mxbiz1.qq.com and mxbiz2.qq.com.

sf-engineering.com shares the same mail server setup as other domains, including surto.cn, manjia.net, gmmedia.co, hoomai.com and ekre.cn.

sf-engineering.com shares some mail servers with other domains, for example ccpitgx.org, perkone.com, kikistore-sns.com and mayimall.com.

sf-engineering.com - robtex.com