`biserwis.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:454^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:83d1^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.4.84^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.131.209^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`elinore.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a99^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elinore.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c099^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elinore.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2099^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elinore.ns.cloudflare.com`
		A	108.162.192.153^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elinore.ns.cloudflare.com`
		A	172.64.32.153^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elinore.ns.cloudflare.com`
		A	173.245.58.153^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elinore.ns.cloudflare.com`
NS	`watson.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c17^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`watson.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c317^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`watson.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2317^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`watson.ns.cloudflare.com`
		A	108.162.195.23^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`watson.ns.cloudflare.com`
		A	162.159.44.23^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`watson.ns.cloudflare.com`
		A	172.64.35.23^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`watson.ns.cloudflare.com`
MX	`mx1.biserwis.com` ⭐
		A	161.97.147.143^{🇩🇪 CONTABO161.97.128.0/19}
			PTR	`mail.mutabakat.com`
MX	`mx2.biserwis.com`⁽¹⁵⁾
		A	161.97.147.143^{🇩🇪 CONTABO161.97.128.0/19}
			PTR	`mail.mutabakat.com`
TXT	`v=spf1 mx ip4:161.97.147.143 -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.4.84, 172.67.131.209
		IPv6	2606:4700:3032::6815:454, 2606:4700:3034::ac43:83d1
SOA	`elinore.ns.cloudflare.com`dns@cloudflare.com serial=2395643489

`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=1774442122

Subdomains

mail.biserwis.com

mx2.biserwis.com

mx1.biserwis.com

Same first word

biserwis.pl

biserwis.com

DNS History

15 records (8 active, 7 former)

●NSelinore.ns.cloudflare.com2026-02-21 → 2026-03-25 · 3 obs

○ 2017-11-12 03:58:24
● 2026-02-21 15:04:24
● 2026-03-25 12:43:10

○NSns1.biserwis.com2017-11-12 → 2017-11-12 · 4 obs

○ 2016-12-13 05:57:12
● 2017-11-12 03:58:24
○ 2026-02-21 15:04:24
○ 2026-03-25 12:43:10

○NSns1.natrohost.com2016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 05:57:12
○ 2017-11-12 03:58:24
○ 2026-03-25 12:43:10

○NSns2.biserwis.com2017-11-12 → 2017-11-12 · 4 obs

○ 2016-12-13 05:57:12
● 2017-11-12 03:58:24
○ 2026-02-21 15:04:24
○ 2026-03-25 12:43:10

○NSns2.natrohost.com2016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 05:57:12
○ 2017-11-12 03:58:24
○ 2026-03-25 12:43:10

●NSwatson.ns.cloudflare.com2026-02-21 → 2026-03-25 · 3 obs

○ 2017-11-12 03:58:24
● 2026-02-21 15:04:24
● 2026-03-25 12:43:10

○MXmail.biserwis.com2017-11-12 → 2017-11-12 · 4 obs

○ 2016-12-13 05:57:12
● 2017-11-12 03:58:24
○ 2026-02-21 15:04:24
○ 2026-03-25 12:43:10

●MXmx1.biserwis.com2016-12-13 → 2026-03-25 · 4 obs

● 2016-12-13 05:57:12
○ 2017-11-12 03:58:24
● 2026-02-21 15:04:24
● 2026-03-25 12:43:10

●MXmx2.biserwis.com2016-12-13 → 2026-03-25 · 4 obs

● 2016-12-13 05:57:12
○ 2017-11-12 03:58:24
● 2026-02-21 15:04:24
● 2026-03-25 12:43:10

●A104.21.4.842026-02-21 → 2026-03-25 · 3 obs

○ 2017-11-12 03:58:24
● 2026-02-21 15:04:24
● 2026-03-25 12:43:10

●A172.67.131.2092026-02-21 → 2026-03-25 · 3 obs

○ 2017-11-12 03:58:24
● 2026-02-21 15:04:24
● 2026-03-25 12:43:10

○A217.116.199.1862016-12-13 → 2016-12-13 · 3 obs

● 2016-12-13 05:57:12
○ 2017-11-12 03:58:24
○ 2026-03-25 12:43:10

○A217.116.201.112017-11-12 → 2017-11-12 · 4 obs

○ 2016-12-13 05:57:12
● 2017-11-12 03:58:24
○ 2026-02-21 15:04:24
○ 2026-03-25 12:43:10

●A2606:4700:3032::6815:4542026-02-21 → 2026-03-25 · 3 obs

○ 2017-11-12 03:58:24
● 2026-02-21 15:04:24
● 2026-03-25 12:43:10

●A2606:4700:3034::ac43:83d12026-02-21 → 2026-03-25 · 3 obs

○ 2017-11-12 03:58:24
● 2026-02-21 15:04:24
● 2026-03-25 12:43:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, f.gtld-servers.net, b.gtld-servers.net, j.gtld-servers.net...	-
biserwis.com	elinore.ns.cloudflare.com, watson.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.23

NS records: elinore.ns.cloudflare.com, watson.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for biserwis.com (unsigned zone)

⏱️ Timing

Total: 161ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.131.209, 104.21.4.84`
AAAA	2	`2606:4700:3034::ac43:83d1, 2606:4700:3032::6815:454`
NS	2	`elinore.ns.cloudflare.com, watson.ns.cloudflare.com`
MX	2	`mx1.biserwis.com (pri: 10), mx2.biserwis.com (pri: 15)`
TXT	1	`v=spf1 mx ip4:161.97.147.143 -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`elinore.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (elinore.ns.cloudflare.com, elinore.ns.cloudflare.com, elinore.ns.cloudflare.com...)

Analysis

Hierarchy

biserwis.com is a parent of mail.biserwis.com, mx2.biserwis.com and mx1.biserwis.com.

IP Addresses

biserwis.com points to four IP numbers: 2606:4700:3032::6815:454, 2606:4700:3034::ac43:83d1, 104.21.4.84 and 172.67.131.209.

Other host names, for instance bowlingballfansubs.it, buyandsellwithsheryl.com, visitrecipes.com, prosms.gr and hugovaz.pt share IP numbers with biserwis.com.

Name Servers

Delegation for biserwis.com rests with two name servers, elinore.ns.cloudflare.com and watson.ns.cloudflare.com.

biserwis.com shares the same name server setup as other domains, including bookmyminibushire.co.uk, ourgreenfish.com, lakeorskirealestate.com, ccnn.info and 105autopecas.com.br.

biserwis.com at least partially shares name servers with other domains, for instance violity.kiev.ua, aps-cambridge.co.uk, revoltnext.com, izmirkirtasiye.com and ellena.pk.

These name servers are commonly used with the name servers julio.ns.cloudflare.com.

Host names with six IP numbers: elinore.ns.cloudflare.com points to: 2606:4700:50::adf5:3a99, 2803:f800:50::6ca2:c099, 2a06:98c1:50::ac40:2099, 108.162.192.153, 172.64.32.153 and 173.245.58.153. watson.ns.cloudflare.com points to: 2606:4700:58::a29f:2c17, 2803:f800:50::6ca2:c317, 2a06:98c1:50::ac40:2317, 108.162.195.23, 162.159.44.23 and 172.64.35.23.

Mail Servers

biserwis.com is handled by two mail servers: mx1.biserwis.com and mx2.biserwis.com.

Host names sharing a single IP:

mx1.biserwis.com points to 161.97.147.143

mx2.biserwis.com points to 161.97.147.143

Host names that point to 161.97.147.143: mx1.biserwis.com and mx2.biserwis.com

biserwis.com - robtex.com

biserwis.com

com

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`biserwis.com`

`com`