by91.com - robtex.com
by91.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 47.239.229.114🇭🇰 Alibaba-Cloud47.239.0.0/16 Proxy-registered route object | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| PTR | ip-47-97-51-45.defastlink.net | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| PTR | ip-47-97-51-45.defastlink.net | ||||||
| NS | ns2.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ip-162-159-27-251.defastlink.net | ||||||
| NS | ns2.julydns.com ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ip-162-159-48-223.defastlink.net | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1770287487 | ||||||
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.netnstld@verisign-grs.com serial=1771291435 | ||||||
Subdomains
www.by91.com |
Same first word
by91.com |
Similar names
yb91.com |
9by1.com |
91by.app |
yb19.com |
19yb.com |
91by.com |
19by.com |
19by.net |
b19y.com |
91yb.com |
yb19.cn |
91yb.cc |
1by9.com |
DNS History
18 records (5 active, 13 former)
○NSn3380.ns.yunjiasu.com2019-01-13 → 2019-01-13 · 3 obs
○ 2017-02-17 16:16:20
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
○NSn509.ns.yunjiasu.com2019-01-13 → 2019-01-13 · 3 obs
○ 2017-02-17 16:16:20
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
○NSns1.360wzb.com2015-07-16 → 2017-02-17 · 4 obs
● 2015-07-16 00:18:00
● 2017-02-17 16:16:20
○ 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2017-02-17 16:16:20
○ 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
●NSns1.julydns.com2026-03-13 → 2026-03-13 · 2 obs
○ 2019-01-13 16:02:52
● 2026-03-13 20:32:08
● 2026-03-13 20:32:08
○NSns2.360wzb.com2015-07-16 → 2017-02-17 · 4 obs
● 2015-07-16 00:18:00
● 2017-02-17 16:16:20
○ 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2017-02-17 16:16:20
○ 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
●NSns2.julydns.com2026-03-13 → 2026-03-13 · 2 obs
○ 2019-01-13 16:02:52
● 2026-03-13 20:32:08
● 2026-03-13 20:32:08
○A125.88.190.592015-07-16 → 2015-07-16 · 3 obs
● 2015-07-16 00:18:00
○ 2015-11-21 15:05:52
○ 2026-03-13 20:32:08
○ 2015-11-21 15:05:52
○ 2026-03-13 20:32:08
○A125.88.190.62015-11-21 → 2015-11-21 · 4 obs
○ 2015-07-16 00:18:00
● 2015-11-21 15:05:52
○ 2016-02-28 02:04:44
○ 2026-03-13 20:32:08
● 2015-11-21 15:05:52
○ 2016-02-28 02:04:44
○ 2026-03-13 20:32:08
○A162.159.228.2252019-01-13 → 2019-01-13 · 3 obs
○ 2017-02-17 16:16:20
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
○A162.159.229.2252019-01-13 → 2019-01-13 · 3 obs
○ 2017-02-17 16:16:20
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
○A222.73.144.1902017-02-17 → 2017-02-17 · 4 obs
○ 2016-06-23 10:53:26
● 2017-02-17 16:16:20
○ 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2017-02-17 16:16:20
○ 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
○A2606:4700:22::a29f:e4e12019-01-13 → 2019-01-13 · 3 obs
○ 2017-02-17 16:16:20
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
○A2606:4700:22::a29f:e5e12019-01-13 → 2019-01-13 · 3 obs
○ 2017-02-17 16:16:20
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
● 2019-01-13 16:02:52
○ 2026-03-13 20:32:08
○A47.236.49.2142026-03-13 → 2026-03-13 · 1 obs
○ 2026-03-13 20:32:08
●A47.239.229.1142026-03-13 → 2026-03-13 · 2 obs
○ 2019-01-13 16:02:52
● 2026-03-13 20:32:08
● 2026-03-13 20:32:08
○A61.160.224.2132016-02-28 → 2016-06-23 · 5 obs
○ 2015-11-21 15:05:52
● 2016-02-28 02:04:44
● 2016-06-23 10:53:26
○ 2017-02-17 16:16:20
○ 2026-03-13 20:32:08
● 2016-02-28 02:04:44
● 2016-06-23 10:53:26
○ 2017-02-17 16:16:20
○ 2026-03-13 20:32:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, k.gtld-servers.net, a.gtld-servers.net, g.gtld-servers.net... | - |
| by91.com | ns1.judns.com, ns2.judns.com | 2 records |
✅ Authoritative Response
Server: 47.97.51.45
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for by91.com (unsigned zone)
⏱️ Timing
Total: 642ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 47.239.229.114 |
| 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
Hierarchy
by91.com is the parent of www.by91.com.
IP Addresses
by91.com resolves to a single IP: 47.239.229.114.
Name Servers
by91.com is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
by91.com shares some name servers with other domains, for example dhqbn.com, xvdj.cn, ygdjc.cn, soooshong.cn and ljfscl.com.
Host names with a single IP:
ns1.judns.com points to 47.97.51.45
ns2.judns.com points to 162.159.27.251
ns1.julydns.com points to 47.97.51.45
ns2.julydns.com points to 162.159.48.223
Names pointing to 47.97.51.45: ns1.judns.com, ns1.julydns.com