`worldlibrary.co.jp`

DNSSEC	⚠️ Not signed
A	183.90.231.144^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
		PTR	`sv363.xbiz.ne.jp`
NS	`ns1.value-domain.com` ⭐
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.value-domain.com`
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns3.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns4.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.53.3^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns5.value-domain.com` ⚠️ Not in zone NS records
		A	172.64.52.38^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`v=spf1 include:_spf.google.com include:_spf.credit.j-payment.co.jp ~all`
SOA	`ns1.value-domain.com`hostmaster@worldlibrary.co.jp 2026-02-20 #16

`co.jp`

	DNSSEC	⚠️ Not signed
	TXT	`co.jp.`

WOT: SAFE (58/100)

Previously MX for

worldlibrary.co.jp

Same first word

worldlibrary.net

worldlibrary.in

worldlibrary.org

worldlibrary.co.jp

worldlibrary.net.cn

Similar names

libraryworld.cn

libraryworld.org

libraryworld.net

libraryworld.com

DNS History

13 records (11 active, 2 former)

●NSns1.value-domain.com2017-02-03 → 2026-08-02 · 2 obs

● 2017-02-03 13:49:28
● 2026-08-02 07:16:46

●NSns2.value-domain.com2017-02-03 → 2026-08-02 · 2 obs

● 2017-02-03 13:49:28
● 2026-08-02 07:16:46

●NSns3.value-domain.com2026-05-28 → 2026-08-02 · 3 obs

○ 2017-02-03 13:49:28
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

●NSns4.value-domain.com2026-05-28 → 2026-08-02 · 3 obs

○ 2017-02-03 13:49:28
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

●NSns5.value-domain.com2026-05-28 → 2026-08-02 · 3 obs

○ 2017-02-03 13:49:28
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

●MXalt1.aspmx.l.google.com2026-05-28 → 2026-08-02 · 3 obs

○ 2019-03-20 22:48:16
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

●MXalt2.aspmx.l.google.com2026-05-28 → 2026-08-02 · 3 obs

○ 2019-03-20 22:48:16
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

●MXalt3.aspmx.l.google.com2026-05-28 → 2026-08-02 · 3 obs

○ 2019-03-20 22:48:16
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

●MXalt4.aspmx.l.google.com2026-05-28 → 2026-08-02 · 3 obs

○ 2019-03-20 22:48:16
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

●MXaspmx.l.google.com2026-05-28 → 2026-08-02 · 3 obs

○ 2019-03-20 22:48:16
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

○MXworldlibrary.co.jp2017-02-03 → 2019-03-20 · 4 obs

● 2017-02-03 13:49:28
● 2019-03-20 22:48:16
○ 2026-05-28 00:14:42
○ 2026-08-02 07:16:46

●A183.90.231.1442026-05-28 → 2026-08-02 · 3 obs

○ 2019-03-20 22:48:16
● 2026-05-28 00:14:42
● 2026-08-02 07:16:46

○A202.172.26.512017-02-03 → 2019-03-20 · 4 obs

● 2017-02-03 13:49:28
● 2019-03-20 22:48:16
○ 2026-05-28 00:14:42
○ 2026-08-02 07:16:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
worldlibrary.co.jp	ns5.value-domain.com, ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com...	-

✅ Authoritative Response

Server:172.64.53.3

NS records: ns5.value-domain.com, ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for worldlibrary.co.jp (unsigned zone)

⏱️ Timing

Total: 1503ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`183.90.231.144`
NS	2	`ns2.value-domain.com, ns1.value-domain.com`
MX	5	`ALT2.ASPMX.L.GOOGLE.COM (pri: 5), ASPMX.L.GOOGLE.COM (pri: 1)...`
TXT	1	`v=spf1 include:_spf.google.com include:_`
SOA	1	`ns1.value-domain.com hostmaster.worldlib`

Analysis

IP Addresses

worldlibrary.co.jp directs to one IP number, which is 183.90.231.144.

Among the host names that share IP numbers with worldlibrary.co.jp are heartis-sc.co.jp, www.daiho.co.jp, zerotokyo.jp and two others.

Name Servers

The authoritative name servers for worldlibrary.co.jp are ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com and two others.

worldlibrary.co.jp shares at least some of its name servers with other domains, including bakerypartner.com, 1div99.com, ncc-ikyoku.net and two others.

These name servers are routinely co-deployed with the name servers ns4.value-domain.com, ns5.value-domain.com, ns11.value-domain.com and two others.

Hosts that resolve to one IP address:

ns1.value-domain.com resolves to 172.64.52.38.

ns2.value-domain.com resolves to 172.64.53.3.

ns3.value-domain.com resolves to 172.64.52.38.

ns4.value-domain.com resolves to 172.64.53.3.

ns5.value-domain.com resolves to 172.64.52.38.

ns1.value-domain.com, ns3.value-domain.com and ns5.value-domain.com all direct to 172.64.52.38.

The host names ns2.value-domain.com and ns4.value-domain.com both resolve to 172.64.53.3 IP addresses.

Mail Servers

Mail for worldlibrary.co.jp is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

worldlibrary.co.jp shares at least some of its mail servers with other domains — for example vegastechfund.com, channel13.ca, jpfinancials.com and two more.

It is common for these mail servers to co-occur with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.

Hosts with two IP numbers each:

aspmx.l.google.com resolves to 142.251.179.26 and 2607:f8b0:4004:c23::1b.

alt1.aspmx.l.google.com resolves to 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1a.