exlearn.jp - dns.ninja

`exlearn.jp`

DNSSEC	⚠️ Not signed
NS	`ns1.hitachi.co.jp` ⭐
		A	133.145.186.157^{🇯🇵 HITNET133.145.128.0/18}
NS	`a1-47.akam.net`
		A	2600:1401:2::2f^{🇺🇸 Akamai2600:1401:2::/48 Technologies}
			PTR	`a1-47.akam.net`
			PTR	`ns1-47.akam.net`
		A	193.108.91.47^{🇳🇱 Akamai193.108.91.0/24 Technologies}
			PTR	`a1-47.akam.net`
			PTR	`ns1-47.akam.net`
NS	`a13-66.akam.net`
		A	2600:1480:800::42^{🇺🇸 Akamai2600:1480:800::/48 Technologies}
			PTR	`a13-66.akam.net`
			PTR	`ns2-66.akam.net`
		A	2.22.230.66^{🇳🇱 Akamai2.22.230.0/24 Technologies}
			PTR	`a13-66.akam.net`
			PTR	`ns2-66.akam.net`
NS	`a16-67.akam.net`
		A	2600:1406:1b::43^{🇺🇸 Akamai2600:1406:1b::/48 Technologies}
			PTR	`a16-67.akam.net`
		A	23.211.132.67^{🇺🇸 Akamai23.211.132.0/24 Technologies}
			PTR	`a16-67.akam.net`
NS	`a24-64.akam.net`
		A	2600:1480:9800::40^{🇺🇸 Akamai2600:1480:9800::/48 Technologies}
			PTR	`a24-64.akam.net`
		A	2.16.130.64^{🇳🇱 Akamai2.16.130.0/24 Technologies}
			PTR	`a24-64.akam.net`
NS	`a28-65.akam.net`
		A	2600:1480:d800::41^{🇺🇸 Akamai2600:1480:d800::/48 Technologies}
			PTR	`a28-65.akam.net`
		A	95.100.173.65^{🇳🇱 Akamai95.100.173.0/24 Technologies}
			PTR	`a28-65.akam.net`
NS	`a3-66.akam.net`
		A	2600:1408:1c::42^{🇺🇸 Akamai2600:1408:1c::/48 Technologies}
			PTR	`a3-66.akam.net`
			PTR	`ns7-66.akam.net`
		A	96.7.49.66^{🇺🇸 Akamai96.7.49.0/24 Technologies}
			PTR	`a3-66.akam.net`
			PTR	`ns7-66.akam.net`
			PTR	`use6.akam.net`
SOA	`ns1.hitachi.co.jp`postmaster@hitachi.co.jp 2026-02-06 #1

`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=1786074302

Same first word

exlearn.tw

exlearn.com

exlearn.jp

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DNS History

11 records (7 active, 4 former)

●NSa1-47.akam.net2026-04-01 → 2026-08-07 · 3 obs

○ 2018-09-19 13:05:48
● 2026-04-01 02:14:52
● 2026-08-07 04:05:22

●NSa13-66.akam.net2026-04-01 → 2026-08-07 · 3 obs

○ 2018-09-19 13:05:48
● 2026-04-01 02:14:52
● 2026-08-07 04:05:22

●NSa16-67.akam.net2026-04-01 → 2026-08-07 · 3 obs

○ 2018-09-19 13:05:48
● 2026-04-01 02:14:52
● 2026-08-07 04:05:22

●NSa24-64.akam.net2026-04-01 → 2026-08-07 · 3 obs

○ 2018-09-19 13:05:48
● 2026-04-01 02:14:52
● 2026-08-07 04:05:22

●NSa28-65.akam.net2026-04-01 → 2026-08-07 · 3 obs

○ 2018-09-19 13:05:48
● 2026-04-01 02:14:52
● 2026-08-07 04:05:22

●NSa3-66.akam.net2026-04-01 → 2026-08-07 · 3 obs

○ 2018-09-19 13:05:48
● 2026-04-01 02:14:52
● 2026-08-07 04:05:22

○NSmns01.ucom.ne.jp2018-09-19 → 2018-09-19 · 4 obs

○ 2017-07-26 01:21:46
● 2018-09-19 13:05:48
○ 2026-04-01 02:14:52
○ 2026-08-07 04:05:22

○NSmns02.ucom.ne.jp2018-09-19 → 2018-09-19 · 4 obs

○ 2017-07-26 01:21:46
● 2018-09-19 13:05:48
○ 2026-04-01 02:14:52
○ 2026-08-07 04:05:22

●NSns1.hitachi.co.jp2015-07-16 → 2026-08-07 · 5 obs

● 2015-07-16 04:06:08
● 2017-07-26 01:21:46
○ 2018-09-19 13:05:48
● 2026-04-01 02:14:52
● 2026-08-07 04:05:22

○NSns2.hitachi.co.jp2015-07-16 → 2017-07-26 · 4 obs

● 2015-07-16 04:06:08
● 2017-07-26 01:21:46
○ 2018-09-19 13:05:48
○ 2026-08-07 04:05:22

○NSns3.hitachi.co.jp2015-07-16 → 2017-07-26 · 4 obs

● 2015-07-16 04:06:08
● 2017-07-26 01:21:46
○ 2018-09-19 13:05:48
○ 2026-08-07 04:05:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
exlearn.jp	a16-67.akam.net, a13-66.akam.net, a1-47.akam.net, a3-66.akam.net...	-

✅ Authoritative Response

Server:193.108.91.47

NS records: a16-67.akam.net, a13-66.akam.net, a1-47.akam.net, a3-66.akam.net, a28-65.akam.net, a24-64.akam.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for exlearn.jp (unsigned zone)

⏱️ Timing

Total: 1331ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	6	`a13-66.akam.net, a3-66.akam.net...`
SOA	1	`ns1.hitachi.co.jp postmaster.hitachi.co.`

Analysis

Name Servers

exlearn.jp carries NS records listing 7 name servers — a1-47.akam.net, a13-66.akam.net, a16-67.akam.net and 4 others.

exlearn.jp has at least partial name server overlap with other domains, such as quant-services.com, myonlyid.website, napapijri.pl and two others.

a3-66.akam.net, a28-65.akam.net and a24-64.akam.net — plus 7 other name servers — are commonly paired with these name servers.

Host names with two IP numbers:

The A records for a1-47.akam.net return 193.108.91.47 and 2600:1401:2::2f.

The A records for a13-66.akam.net return 2.22.230.66 and 2600:1480:800::42.

The A records for a16-67.akam.net return 23.211.132.67 and 2600:1406:1b::43.

The A records for a24-64.akam.net return 2.16.130.64 and 2600:1480:9800::40.

The A records for a28-65.akam.net return 95.100.173.65 and 2600:1480:d800::41.

The A records for a3-66.akam.net return 96.7.49.66 and 2600:1408:1c::42.

Host names pointing to a single IP address:

ns1.hitachi.co.jp resolves to the IP address 133.145.186.157.