`okfn.jp`

DNSSEC	⚠️ Not signed
A	185.199.108.153^{🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24}
		PTR	`cdn-185-199-108-153.github.com`
A	185.199.109.153^{🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24}
A	185.199.110.153^{🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24}
A	185.199.111.153^{🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24}
NS	`01.dnsv.jp` ⭐
		A	2400:8500:3300::53^{🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc.}
			PTR	`01.dnsv.jp`
		A	157.7.32.53^{🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team.}
			PTR	`01.dnsv.jp`
NS	`02.dnsv.jp`
		A	157.7.33.53^{🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team.}
			PTR	`02.dnsv.jp`
NS	`03.dnsv.jp`
		A	2400:8500:3000::53^{🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc.}
			PTR	`03.dnsv.jp`
		A	157.7.34.53^{🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team.}
			PTR	`03.dnsv.jp`
NS	`04.dnsv.jp`
		A	2400:8500:3fff::53^{🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc.}
			PTR	`04.dnsv.jp`
		A	157.7.35.53^{🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team.}
			PTR	`04.dnsv.jp`
MX	`mx1.improvmx.com` ⭐
		A	2a05:d012:412:e201:88aa:e7b9:7a43:12d7^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e202:f36:2c1f:1a49:d38a^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e203:373a:f51a:4a85:1d25^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	13.37.195.136^{🇫🇷 Amazon13.36.0.0/14 EC2 CDG Prefix}
			PTR	`ec2-13-37-195-136.eu-west-3.compute.amazonaws.com`
		A	15.236.236.160^{🇫🇷 Amazon15.236.0.0/15 EC2 CDG prefix}
			PTR	`ec2-15-236-236-160.eu-west-3.compute.amazonaws.com`
		A	35.181.18.45^{🇫🇷 Amazon35.181.0.0/16 EC2 CDG prefix}
			PTR	`ec2-35-181-18-45.eu-west-3.compute.amazonaws.com`
MX	`mx2.improvmx.com`⁽²⁰⁾
		A	2a05:d012:412:e201:1f6e:f6e4:8fd7:4678^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e202:e81e:cc44:3b53:8a3d^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e203:7e33:3d9c:28d7:ee20^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	13.36.107.63^{🇫🇷 Amazon13.36.0.0/14 EC2 CDG Prefix}
			PTR	`ec2-13-36-107-63.eu-west-3.compute.amazonaws.com`
		A	13.36.222.39^{🇫🇷 Amazon13.36.0.0/14 EC2 CDG Prefix}
			PTR	`ec2-13-36-222-39.eu-west-3.compute.amazonaws.com`
		A	15.236.61.92^{🇫🇷 Amazon15.236.0.0/15 EC2 CDG prefix}
			PTR	`ec2-15-236-61-92.eu-west-3.compute.amazonaws.com`
TXT	`v=spf1 include:spf.improvmx.com ~all`
SOA	`01.dnsv.jp`hostmaster@dnsv.jp serial=1626333306

`jp`

	DNSSEC	🔒 Signed (DS record present)
	NS	`z.dns.jp` ⭐
	NS	`a.dns.jp`
	NS	`b.dns.jp`
	NS	`c.dns.jp`
	NS	`d.dns.jp`
	NS	`e.dns.jp`
	NS	`f.dns.jp`
	NS	`g.dns.jp`
	NS	`h.dns.jp`
	SOA	`z.dns.jp`root@dns.jp serial=1776060003

Same first word

okfn.es

okfn.jp

okfn.vm.bytemark.co.uk

okfn.ch

okfn.kr

okfn.fr

okfn.com

okfn.be

okfn.gr

okfn.se

okfn.de

okfn.org

okfn.ru

okfn.nl

Similar names

fonk.dk

konf.de

knof.ru

ofkn.cn

fkno.ru

knof.com

knof.cn

fonk.org

konf.no

fnok.cn

knof.info

onfk.se

fnok.ru

fonk.co.uk

fonk.nu

fnok.com

kfon.de

oknf.com

fkon.dk

fonk.jp

fnko.com

nfko.net

fkon.us

fkon.de

fnko.cc

fonk.ch

oknf.cn

knof.de

konf.ch

nfok.info

knof.si

kofn.net

nofk.no

fkon.ru

fonk.cl

fonk.capetown

konf.ru

fkno.net

onfk.com

konf.us

fonk.eu

fonk.me

konf.com

kfno.com

nfko.com

onkf.com

nofk.cn

konf.cz

ofnk.com

nkfo.com

konf.lt

konf.dk

knof.org

fnok.pl

fonk.ru

kfon.in

kofn.com

kfon.ru

konf.org

kfon.info

kfon.pl

fonk.co.il

konf.pl

fonk.net

konf.com.ua

nkof.com

fonk.se

fonk.fr

fonk.de

fonk.it

nfok.com

konf.guide

fkon.se

oknf.org

kfon.co.in

fkon.com

fonk.be

fonk.amsterdam

fkon.net

fkon.eu

fonk.com

kfon.org

kfon.net

konf.net

konf.fi

konf.se

ofkn.com

nkfo.de

DNS History

18 records (10 active, 8 former)

●NS01.dnsv.jp2015-06-17 → 2026-04-13 · 2 obs

● 2015-06-17 01:11:18
● 2026-04-13 06:20:32

●NS02.dnsv.jp2015-06-17 → 2026-04-13 · 2 obs

● 2015-06-17 01:11:18
● 2026-04-13 06:20:32

●NS03.dnsv.jp2015-06-17 → 2026-04-13 · 2 obs

● 2015-06-17 01:11:18
● 2026-04-13 06:20:32

●NS04.dnsv.jp2015-06-17 → 2026-04-13 · 2 obs

● 2015-06-17 01:11:18
● 2026-04-13 06:20:32

○MXalt1.aspmx.l.google.com2015-06-17 → 2017-03-26 · 4 obs

● 2015-06-17 01:11:18
● 2017-03-26 16:26:02
○ 2026-04-06 09:57:04
○ 2026-04-13 06:20:32

○MXalt2.aspmx.l.google.com2015-06-17 → 2017-03-26 · 4 obs

● 2015-06-17 01:11:18
● 2017-03-26 16:26:02
○ 2026-04-06 09:57:04
○ 2026-04-13 06:20:32

○MXaspmx.l.google.com2015-06-17 → 2017-03-26 · 4 obs

● 2015-06-17 01:11:18
● 2017-03-26 16:26:02
○ 2026-04-06 09:57:04
○ 2026-04-13 06:20:32

○MXaspmx2.googlemail.com2015-06-17 → 2017-03-26 · 4 obs

● 2015-06-17 01:11:18
● 2017-03-26 16:26:02
○ 2026-04-06 09:57:04
○ 2026-04-13 06:20:32

○MXaspmx3.googlemail.com2015-06-17 → 2017-03-26 · 4 obs

● 2015-06-17 01:11:18
● 2017-03-26 16:26:02
○ 2026-04-06 09:57:04
○ 2026-04-13 06:20:32

○MXaspmx4.googlemail.com2015-06-17 → 2017-03-26 · 4 obs

● 2015-06-17 01:11:18
● 2017-03-26 16:26:02
○ 2026-04-06 09:57:04
○ 2026-04-13 06:20:32

○MXaspmx5.googlemail.com2015-06-17 → 2017-03-26 · 4 obs

● 2015-06-17 01:11:18
● 2017-03-26 16:26:02
○ 2026-04-06 09:57:04
○ 2026-04-13 06:20:32

●MXmx1.improvmx.com2026-04-06 → 2026-04-13 · 3 obs

○ 2017-03-26 16:26:02
● 2026-04-06 09:57:04
● 2026-04-13 06:20:32

●MXmx2.improvmx.com2026-04-06 → 2026-04-13 · 3 obs

○ 2017-03-26 16:26:02
● 2026-04-06 09:57:04
● 2026-04-13 06:20:32

○A112.78.117.232015-06-17 → 2017-03-26 · 4 obs

● 2015-06-17 01:11:18
● 2017-03-26 16:26:02
○ 2026-04-06 09:57:04
○ 2026-04-13 06:20:32

●A185.199.108.1532026-04-06 → 2026-04-13 · 3 obs

○ 2017-03-26 16:26:02
● 2026-04-06 09:57:04
● 2026-04-13 06:20:32

●A185.199.109.1532026-04-06 → 2026-04-13 · 3 obs

○ 2017-03-26 16:26:02
● 2026-04-06 09:57:04
● 2026-04-13 06:20:32

●A185.199.110.1532026-04-06 → 2026-04-13 · 3 obs

○ 2017-03-26 16:26:02
● 2026-04-06 09:57:04
● 2026-04-13 06:20:32

●A185.199.111.1532026-04-06 → 2026-04-13 · 3 obs

○ 2017-03-26 16:26:02
● 2026-04-06 09:57:04
● 2026-04-13 06:20:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
okfn.jp	03.dnsv.jp, 02.dnsv.jp, 01.dnsv.jp, 04.dnsv.jp	7 records

✅ Authoritative Response

Server:157.7.34.53

NS records: 03.dnsv.jp, 02.dnsv.jp, 01.dnsv.jp, 04.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for okfn.jp (unsigned zone)

⏱️ Timing

Total: 1006ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`185.199.108.153, 185.199.109.153...`
NS	4	`01.dnsv.jp, 02.dnsv.jp...`
MX	2	`mx1.improvmx.com (pri: 10), mx2.improvmx.com (pri: 20)`
TXT	1	`v=spf1 include:spf.improvmx.com ~all`
SOA	1	`01.dnsv.jp hostmaster.dnsv.jp`

📌 Glue Records Collected

Total: 7

Out-of-bailiwick: 7 (04.dnsv.jp, 03.dnsv.jp, 02.dnsv.jp...)

Analysis

IP Addresses

Four IP numbers are pointed to by okfn.jp: 185.199.108.153, 185.199.109.153, 185.199.110.153 and 185.199.111.153.

other host names including covidpapers.github.io, stanimira.com, thraka.github.io, ugeeker.com and bgrawi.com share IP numbers with okfn.jp.

Name Servers

okfn.jp is delegated to four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.

okfn.jp at least partially shares name servers with other domains, for instance klang.me, fukuromono-studio.com, maverick-group.co.jp, ewave.jp and littelu.com.

Host names with two IP numbers:

01.dnsv.jp points to 2400:8500:3300::53 and 157.7.32.53.

03.dnsv.jp points to 2400:8500:3000::53 and 157.7.34.53.

04.dnsv.jp points to 2400:8500:3fff::53 and 157.7.35.53.

Host names with one IP number:

02.dnsv.jp points to 157.7.33.53.

Mail Servers

Two mail servers handle okfn.jp: mx1.improvmx.com and mx2.improvmx.com.

okfn.jp shares the same mail server setup as other domains, for instance fridge.menu, gridcache.org, smartchart.com.br, infinitylist.com and albertaproud.org.

okfn.jp shares at least partially some mail servers with other domains, including cpubw.ca, bigmike.help and landier.net.

Host names with six IP numbers:

Host name mx1.improvmx.com points to: 2a05:d012:412:e201:88aa:e7b9:7a43:12d7, 2a05:d012:412:e202:f36:2c1f:1a49:d38a, 2a05:d012:412:e203:373a:f51a:4a85:1d25, 13.37.195.136, 15.236.236.160 and 35.181.18.45.

Host name mx2.improvmx.com points to: 2a05:d012:412:e201:1f6e:f6e4:8fd7:4678, 2a05:d012:412:e202:e81e:cc44:3b53:8a3d, 2a05:d012:412:e203:7e33:3d9c:28d7:ee20, 13.36.107.63, 13.36.222.39 and 15.236.61.92.

okfn.jp - robtex.com

okfn.jp

jp

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`okfn.jp`

`jp`