`by4s.com`

DNSSEC	⚠️ Not signed
A	8.217.172.135^{🇭🇰 Alibaba-Cloud8.217.128.0/17 Alibaba.com Singapore E-Commerce Private Limited 51 Bras Basah Road 04-08 Lazada One Singapore 189554}
NS	`ns1.julydns.com` ⭐ ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.julydns.com` ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
SOA	`ns1.julydns.com`master@jmdns.com serial=1772804809

`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=1778581321

Same first word

by4s.com

Similar names

b4ys.org.uk

b4ys.com

bs4y.info

bs4y.com

4bsy.com

4bys.com

syb4.com

DNS History

19 records (5 active, 14 former)

○NSf1g1ns1.dnspod.net2016-03-26 → 2016-08-13 · 4 obs

○ 2015-12-23 13:28:04
● 2016-03-26 22:08:00
● 2016-08-13 17:55:48
○ 2026-05-12 10:41:18

○NSf1g1ns2.dnspod.net2016-03-26 → 2016-08-13 · 4 obs

○ 2015-12-23 13:28:04
● 2016-03-26 22:08:00
● 2016-08-13 17:55:48
○ 2026-05-12 10:41:18

○NSns1.domainnamedns.com2026-05-12 → 2026-05-12 · 1 obs

○ 2026-05-12 10:41:18

●NSns1.judns.com2026-05-12 → 2026-05-12 · 2 obs

○ 2016-08-13 17:55:48
● 2026-05-12 10:41:18

●NSns1.julydns.com2026-05-12 → 2026-05-12 · 2 obs

○ 2016-08-13 17:55:48
● 2026-05-12 10:41:18

○NSns1.myhostadmin.net2015-05-11 → 2015-10-14 · 4 obs

● 2015-05-11 04:40:36
● 2015-10-14 05:03:04
○ 2015-12-23 13:28:04
○ 2026-05-12 10:41:18

○NSns2.domainnamedns.com2026-05-12 → 2026-05-12 · 1 obs

○ 2026-05-12 10:41:18

●NSns2.judns.com2026-05-12 → 2026-05-12 · 2 obs

○ 2016-08-13 17:55:48
● 2026-05-12 10:41:18

●NSns2.julydns.com2026-05-12 → 2026-05-12 · 2 obs

○ 2016-08-13 17:55:48
● 2026-05-12 10:41:18

○NSns2.myhostadmin.net2015-05-11 → 2015-10-14 · 4 obs

● 2015-05-11 04:40:36
● 2015-10-14 05:03:04
○ 2015-12-23 13:28:04
○ 2026-05-12 10:41:18

○NSns3.domainnamedns.com2026-05-12 → 2026-05-12 · 1 obs

○ 2026-05-12 10:41:18

○NSns3.myhostadmin.net2015-05-11 → 2015-10-14 · 4 obs

● 2015-05-11 04:40:36
● 2015-10-14 05:03:04
○ 2015-12-23 13:28:04
○ 2026-05-12 10:41:18

○NSns4.domainnamedns.com2026-05-12 → 2026-05-12 · 1 obs

○ 2026-05-12 10:41:18

○NSns4.myhostadmin.net2015-05-11 → 2015-10-14 · 4 obs

● 2015-05-11 04:40:36
● 2015-10-14 05:03:04
○ 2015-12-23 13:28:04
○ 2026-05-12 10:41:18

○NSns5.myhostadmin.net2015-05-11 → 2015-10-14 · 4 obs

● 2015-05-11 04:40:36
● 2015-10-14 05:03:04
○ 2015-12-23 13:28:04
○ 2026-05-12 10:41:18

○NSns6.myhostadmin.net2015-05-11 → 2015-10-14 · 4 obs

● 2015-05-11 04:40:36
● 2015-10-14 05:03:04
○ 2015-12-23 13:28:04
○ 2026-05-12 10:41:18

○A103.227.84.1272015-05-11 → 2015-10-14 · 4 obs

● 2015-05-11 04:40:36
● 2015-10-14 05:03:04
○ 2015-12-23 13:28:04
○ 2026-05-12 10:41:18

○A156.245.98.1212026-05-12 → 2026-05-12 · 1 obs

○ 2026-05-12 10:41:18

●A8.217.172.1352026-05-12 → 2026-05-12 · 2 obs

○ 2015-12-23 13:28:04
● 2026-05-12 10:41:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net...	-
by4s.com	ns1.judns.com, ns2.judns.com	2 records

✅ Authoritative Response

Server:162.159.27.251

NS records: ns1.judns.com, ns2.judns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for by4s.com (unsigned zone)

⏱️ Timing

Total: 424ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`8.217.172.135`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.judns.com, ns2.judns.com)

Analysis

IP Addresses

by4s.com points to a single IP address: 8.217.172.135.

Other host names such as sdjiaxiang.com, czysqm.com, gardsen.com, 4ud381.cn and k1963.com share IPs with by4s.com.

Name Servers

by4s.com is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

by4s.com at least partially shares name servers with other domains, for example hongkunchem.com, jyxgyp.com, darioai.com, pxbza.cn and csybwh.com.