`yb49.net`

DNSSEC	⚠️ Not signed
NS	`edns153.ultradns.com` ⭐ ⚠️ Not in parent delegation
		A	2001:502:f3ff::299^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`edns153.ultradns.com`
		A	204.74.66.153^{🇺🇸 MAINT-ID-12008204.74.66.0/24 Neustar}
			PTR	`edns153.ultradns.com`
NS	`edns153.ultradns.biz` ⚠️ Not in parent delegation
		A	2610:a1:1015::299^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`edns153.ultradns.biz`
		A	204.74.67.153^{🇺🇸 MAINT-ID-12008204.74.67.0/24 Neustar}
			PTR	`edns153.ultradns.biz`
NS	`edns153.ultradns.net` ⚠️ Not in parent delegation
		A	2610:a1:1014::299^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`edns153.ultradns.net`
		A	204.74.110.153^{🇺🇸 MAINT-ID-12008204.74.110.0/24 Neustar}
			PTR	`edns153.ultradns.net`
NS	`edns153.ultradns.org` ⚠️ Not in parent delegation
		A	2001:502:4612::299^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`edns153.ultradns.org`
		A	204.74.111.153^{🇺🇸 MAINT-ID-12008204.74.111.0/24 Neustar}
			PTR	`edns153.ultradns.org`
NS	`pdns104.ultradns.biz` ⚠️ Not in zone NS records
		A	2610:a1:1015::8c^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns104.ultradns.biz`
		A	156.154.66.104^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns104.ultradns.biz`
NS	`pdns104.ultradns.com` ⚠️ Not in zone NS records
		A	2001:502:f3ff::8c^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns104.ultradns.com`
		A	156.154.64.104^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns104.ultradns.com`
NS	`pdns104.ultradns.net` ⚠️ Not in zone NS records
		A	2610:a1:1014::8c^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns104.ultradns.net`
		A	156.154.65.104^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns104.ultradns.net`
NS	`pdns104.ultradns.org` ⚠️ Not in zone NS records
		A	2001:502:4612::8c^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns104.ultradns.org`
		A	156.154.67.104^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns104.ultradns.org`
SOA	`edns153.ultradns.com`zhanghang8819@gmail.com 2021-11-11 #3

`net`

	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=1785413802

Same first word

yb49.net

Similar names

by49.cn

4by9.ai

9by4.com

y94b.xyz

by49.com

4by9.com

DNS History

8 records (8 active, 0 former)

●NSedns153.ultradns.biz2026-06-25 → 2026-07-30 · 2 obs

● 2026-06-25 01:51:00
● 2026-07-30 12:19:24

●NSedns153.ultradns.com2026-06-25 → 2026-07-30 · 2 obs

● 2026-06-25 01:51:00
● 2026-07-30 12:19:24

●NSedns153.ultradns.net2026-06-25 → 2026-07-30 · 2 obs

● 2026-06-25 01:51:00
● 2026-07-30 12:19:24

●NSedns153.ultradns.org2026-06-25 → 2026-07-30 · 2 obs

● 2026-06-25 01:51:00
● 2026-07-30 12:19:24

●NSpdns104.ultradns.biz2026-06-25 → 2026-07-30 · 2 obs

● 2026-06-25 01:51:00
● 2026-07-30 12:19:24

●NSpdns104.ultradns.com2026-06-25 → 2026-07-30 · 2 obs

● 2026-06-25 01:51:00
● 2026-07-30 12:19:24

●NSpdns104.ultradns.net2026-06-25 → 2026-07-30 · 2 obs

● 2026-06-25 01:51:00
● 2026-07-30 12:19:24

●NSpdns104.ultradns.org2026-06-25 → 2026-07-30 · 2 obs

● 2026-06-25 01:51:00
● 2026-07-30 12:19:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	h.gtld-servers.net, d.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net...	-
yb49.net	pdns104.ultradns.net, pdns104.ultradns.com, pdns104.ultradns.biz, pdns104.ultradns.org	2 records

✅ Authoritative Response

Server:156.154.64.104

NS records: pdns104.ultradns.net, pdns104.ultradns.com, pdns104.ultradns.biz, pdns104.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yb49.net (unsigned zone)

⏱️ Timing

Total: 602ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`edns153.ultradns.biz, edns153.ultradns.com...`
SOA	1	`edns153.ultradns.com zhanghang8819.gmail`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (pdns104.ultradns.net, pdns104.ultradns.net)

Analysis

Name Servers

yb49.net has 8 name servers — edns153.ultradns.biz, pdns104.ultradns.biz, edns153.ultradns.com and 5 others.

yb49.net has at least partial name server overlap with other domains, such as 10035ky.com, 67.84.74.in-addr.arpa, 259kaiyun.vip and two others.

pdns104.ultradns.com, pdns104.ultradns.net and pdns104.ultradns.org — plus 7 other name servers — are commonly paired with these name servers.

Host names with two IP numbers:

edns153.ultradns.biz resolves to 204.74.67.153 and 2610:a1:1015::299.

pdns104.ultradns.biz resolves to 156.154.66.104 and 2610:a1:1015::8c.

edns153.ultradns.com resolves to 204.74.66.153 and 2001:502:f3ff::299.

pdns104.ultradns.com resolves to 156.154.64.104 and 2001:502:f3ff::8c.

edns153.ultradns.net resolves to 204.74.110.153 and 2610:a1:1014::299.

pdns104.ultradns.net resolves to 156.154.65.104 and 2610:a1:1014::8c.

edns153.ultradns.org resolves to 204.74.111.153 and 2001:502:4612::299.

pdns104.ultradns.org resolves to 156.154.67.104 and 2001:502:4612::8c.