`51offer.com`

DNSSEC	⚠️ Not signed
A	182.92.26.25^{🇨🇳 Alibaba-Cloud182.92.0.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
A	182.92.26.140^{🇨🇳 Alibaba-Cloud182.92.0.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
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}
			PTR	`ip-1-12-0-4.defastlink.net`
		A	1.14.119.35^{🇨🇳 TENCENT-NET-AP1.14.64.0/18}
			PTR	`ip-1-14-119-35.defastlink.net`
		A	111.13.13.35^{🇨🇳 CHINAMOBILE-CN111.13.0.0/16 CMI (Customer Route)}
			PTR	`ip-111-13-13-35.defastlink.net`
		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}
			PTR	`ip-125-94-59-235.defastlink.net`
		A	163.177.5.35^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
			PTR	`ip-163-177-5-35.defastlink.net`
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}
			PTR	`ip-1-12-0-1.defastlink.net`
		A	1.13.76.35^{🇨🇳 TENCENT-NET-AP1.13.64.0/18}
			PTR	`ip-1-13-76-35.defastlink.net`
		A	36.155.149.35^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
			PTR	`ip-36-155-149-35.defastlink.net`
		A	101.227.168.35^{🇨🇳 SHANGHAITELECOM101.227.168.0/23 SHIDC}
			PTR	`ip-101-227-168-35.defastlink.net`
		A	106.39.207.235^{🇨🇳 CHINA-1106.39.192.0/19 China Telecom Beijing Co. Ltd.}
			PTR	`ip-106-39-207-235.defastlink.net`
		A	111.206.98.235^{🇨🇳 CHINA169-BJ111.206.98.0/24}
			PTR	`ip-111-206-98-235.defastlink.net`
		A	220.196.136.35^{🇨🇳 UNICOM-SHFT-IDC220.196.136.0/24}
			PTR	`ip-220-196-136-35.defastlink.net`
MX	`51offer-com.corpsmtp.net` ⭐
		A	23.91.98.8^{🇺🇸 UCLOUD-123.91.98.0/24 ZL-IDC-UCLOUD-HKG}
			PTR	`sal605.corpemail.net`
		A	47.74.183.245^{🇸🇬 Alibaba-Cloud47.74.128.0/18 Alibaba.com Inc. 400 S El Camino Real Suite 400 San Mateo, CA94402 US}
			PTR	`sal604.corpemail.net`
		A	47.88.156.124^{🇸🇬 Alibaba-Cloud47.88.128.0/18 Alibaba CLoud}
			PTR	`sal603.corpemail.net`
		A	47.88.170.90^{🇸🇬 Alibaba-Cloud47.88.128.0/18 Alibaba CLoud}
			PTR	`sal601.corpemail.net`
		A	95.85.54.247^{🇳🇱 DIGITALOCEAN95.85.0.0/18 DigitalOcean}
			PTR	`inbound-603.protection.corpemail.net`
		A	159.100.25.64^{🇦🇹 AT-FIRSTCOLO159.100.24.0/22 First Colo via AS203833}
			PTR	`dd-cn2-101.corpemail.net`
		A	159.100.25.163^{🇦🇹 AT-FIRSTCOLO159.100.24.0/22 First Colo via AS203833}
			PTR	`dd-cn2-401.corpemail.net`
		A	159.100.25.212^{🇦🇹 AT-FIRSTCOLO159.100.24.0/22 First Colo via AS203833}
			PTR	`dd-cn2-402.corpemail.net`
		A	188.166.26.239^{🇳🇱 DIGITALOCEAN188.166.0.0/18 DigitalOcean}
			PTR	`inbound-602.protection.corpemail.net`
MX	`51offer-com.corpsmtp.cn`⁽¹⁰⁾
		A	23.91.98.8^{🇺🇸 UCLOUD-123.91.98.0/24 ZL-IDC-UCLOUD-HKG}
			PTR	`sal605.corpemail.net`
		A	47.74.183.245^{🇸🇬 Alibaba-Cloud47.74.128.0/18 Alibaba.com Inc. 400 S El Camino Real Suite 400 San Mateo, CA94402 US}
			PTR	`sal604.corpemail.net`
		A	47.88.156.124^{🇸🇬 Alibaba-Cloud47.88.128.0/18 Alibaba CLoud}
			PTR	`sal603.corpemail.net`
		A	47.88.170.90^{🇸🇬 Alibaba-Cloud47.88.128.0/18 Alibaba CLoud}
			PTR	`sal601.corpemail.net`
		A	95.85.54.247^{🇳🇱 DIGITALOCEAN95.85.0.0/18 DigitalOcean}
			PTR	`inbound-603.protection.corpemail.net`
		A	159.100.25.64^{🇦🇹 AT-FIRSTCOLO159.100.24.0/22 First Colo via AS203833}
			PTR	`dd-cn2-101.corpemail.net`
		A	159.100.25.163^{🇦🇹 AT-FIRSTCOLO159.100.24.0/22 First Colo via AS203833}
			PTR	`dd-cn2-401.corpemail.net`
		A	159.100.25.212^{🇦🇹 AT-FIRSTCOLO159.100.24.0/22 First Colo via AS203833}
			PTR	`dd-cn2-402.corpemail.net`
		A	188.166.26.239^{🇳🇱 DIGITALOCEAN188.166.0.0/18 DigitalOcean}
			PTR	`inbound-602.protection.corpemail.net`
MX	`cnc.biz-email.net`⁽¹⁵⁾
		A	210.51.26.140^{🇨🇳 CU-CN-AS210.51.26.0/24}
		A	210.51.26.150^{🇨🇳 CU-CN-AS210.51.26.0/24}
MX	`mail.biz-email.net`⁽²⁰⁾
		A	222.73.234.229^{🇨🇳 SHANGHAITELECOM222.73.234.0/24 SHIDC}
			PTR	`mail.biz-email.net`
		A	222.73.234.234^{🇨🇳 SHANGHAITELECOM222.73.234.0/24 SHIDC}
			PTR	`mail.biz-email.net`
		A	222.73.234.236^{🇨🇳 SHANGHAITELECOM222.73.234.0/24 SHIDC}
			PTR	`mail.biz-email.net`
TXT	`916631224-16903753`
TXT	`v=spf1 ip4:123.57.35.223 include:_s.corp-email.com -all`
SOA	`f1g1ns1.dnspod.net`freednsadmin@dnspod.com serial=1700719139

`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

rank #613705 globally
rank #275944 in the tld
📈 Tranco rank: #984,244

Subdomains

mail.51offer.com

s2.51offer.com

Same first word

51offer.com

51offer.github.io

Similar names

offer51.com

DNS History

14 records (8 active, 6 former)

●NSf1g1ns1.dnspod.net2015-08-11 → 2026-03-09 · 2 obs

● 2015-08-11 07:18:32
● 2026-03-09 22:44:02

●NSf1g1ns2.dnspod.net2015-08-11 → 2026-03-09 · 2 obs

● 2015-08-11 07:18:32
● 2026-03-09 22:44:02

●MX51offer-com.corpsmtp.cn2026-02-23 → 2026-03-09 · 3 obs

○ 2017-02-19 23:46:16
● 2026-02-23 18:17:46
● 2026-03-09 22:44:02

●MX51offer-com.corpsmtp.net2026-02-23 → 2026-03-09 · 3 obs

○ 2017-02-19 23:46:16
● 2026-02-23 18:17:46
● 2026-03-09 22:44:02

●MXcnc.biz-email.net2026-02-23 → 2026-03-09 · 3 obs

○ 2017-02-19 23:46:16
● 2026-02-23 18:17:46
● 2026-03-09 22:44:02

○MXmail.51offer.com2017-01-09 → 2017-02-19 · 5 obs

○ 2016-05-04 23:05:48
● 2017-01-09 20:33:20
● 2017-02-19 23:46:16
○ 2026-02-23 18:17:46
○ 2026-03-09 22:44:02

●MXmail.biz-email.net2026-02-23 → 2026-03-09 · 3 obs

○ 2017-02-19 23:46:16
● 2026-02-23 18:17:46
● 2026-03-09 22:44:02

○MXmxbiz1.qq.com2015-08-11 → 2016-05-04 · 4 obs

● 2015-08-11 07:18:32
● 2016-05-04 23:05:48
○ 2017-01-09 20:33:20
○ 2026-03-09 22:44:02

○MXmxbiz2.qq.com2015-08-11 → 2016-05-04 · 4 obs

● 2015-08-11 07:18:32
● 2016-05-04 23:05:48
○ 2017-01-09 20:33:20
○ 2026-03-09 22:44:02

○A101.201.241.982016-03-23 → 2016-03-23 · 4 obs

○ 2015-12-01 01:50:04
● 2016-03-23 00:23:00
○ 2016-05-04 23:05:48
○ 2026-03-09 22:44:02

○A123.56.115.1062015-08-11 → 2015-12-01 · 4 obs

● 2015-08-11 07:18:32
● 2015-12-01 01:50:04
○ 2016-03-23 00:23:00
○ 2026-03-09 22:44:02

●A182.92.26.1402016-05-04 → 2026-03-09 · 3 obs

○ 2016-03-23 00:23:00
● 2016-05-04 23:05:48
● 2026-03-09 22:44:02

●A182.92.26.252016-05-04 → 2026-03-09 · 3 obs

○ 2016-03-23 00:23:00
● 2016-05-04 23:05:48
● 2026-03-09 22:44:02

○CNAME51offer01.vyrd12vd13.aliyungf.com2016-03-23 → 2016-03-23 · 3 obs

● 2016-03-23 00:23:00
○ 2016-05-04 23:05:48
○ 2026-03-09 22:44:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
51offer.com	f1g1ns1.dnspod.net, f1g1ns2.dnspod.net	-

✅ Authoritative Response

Server: 220.196.136.35

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51offer.com (unsigned zone)

⏱️ Timing

Total: 1005ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`182.92.26.140, 182.92.26.25`
NS	2	`f1g1ns2.dnspod.net, f1g1ns1.dnspod.net`
MX	4	`51offer-com.corpsmtp.net (pri: 5), 51offer-com.corpsmtp.cn (pri: 10)...`
TXT	2	`916631224-16903753, v=spf1 ip4:123.57.35.223 include:_s.corp`
SOA	1	`f1g1ns1.dnspod.net freednsadmin.dnspod.c`

Analysis

Hierarchy

51offer.com is a parent of mail.51offer.com and s2.51offer.com.

IP Addresses

51offer.com points to two IP numbers: 182.92.26.25 and 182.92.26.140.

Name Servers

Two name servers f1g1ns1.dnspod.net and f1g1ns2.dnspod.net handle the delegation for 51offer.com.

51offer.com shares the same name server setup as other domains, for example guardlove.com, xiazaiwww.net, shareto.net, 778cn.com and liuhaiyang.com.

51offer.com at least partially shares name servers with other domains, for example rluhn.cn, swcxk.icu, ceesz.cn, yjcjd.com and chat20ax.cfd.