knowledge-library.jp - robtex.com

knowledge-library.jp

DNSSEC⚠️ Not signed
A13.159.75.227🇺🇸 Amazon13.158.0.0/15 EC2 NRT prefix
PTRec2-13-159-75-227.ap-northeast-1.compute.amazonaws.com
A18.177.100.204🇯🇵 Amazon18.176.0.0/15 EC2 NRT prefix
NSns-813.awsdns-37.net ⭐
A2600:9000:5303:2d00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront
PTRns-813.awsdns-37.net
A205.251.195.45🇺🇸 Amazon205.251.195.0/24 prefix
PTRns-813.awsdns-37.net
NSns-1452.awsdns-53.org
A2600:9000:5305:ac00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront
PTRns-1452.awsdns-53.org
A205.251.197.172🇺🇸 Amazon205.251.197.0/24 prefix
PTRns-1452.awsdns-53.org
NSns-1803.awsdns-33.co.uk
A2600:9000:5307:b00::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront
PTRns-1803.awsdns-33.co.uk
A205.251.199.11🇺🇸 Amazon205.251.199.0/24 prefix
PTRns-1803.awsdns-33.co.uk
NSns-91.awsdns-11.com
A2600:9000:5300:5b00::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront
PTRns-91.awsdns-11.com
A205.251.192.91🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-91.awsdns-11.com
TXTv=spf1 +ip4:54.249.106.12/32 +ip4:54.249.83.183/32 ~all
SOAns-813.awsdns-37.netawsdns-hostmaster@amazon.com serial=1

jp

DNSSEC🔒 Signed (DS record present)
NSz.dns.jp ⭐
NSa.dns.jp
NSb.dns.jp
NSc.dns.jp
NSd.dns.jp
NSe.dns.jp
NSf.dns.jp
NSg.dns.jp
NSh.dns.jp
SOAz.dns.jproot@dns.jp serial=1771290902

Same first word

knowledge-library.jp

DNS History

6 records (6 active, 0 former)

NSns-1452.awsdns-53.orgns-1803.awsdns-33.co.ukns-813.awsdns-37.netns-91.awsdns-11.comA13.159.75.22718.177.100.204
●NSns-1452.awsdns-53.org2026-02-26 → 2026-02-27 · 2 obs
● 2026-02-26 19:38:04
● 2026-02-27 00:46:06
●NSns-1803.awsdns-33.co.uk2026-02-26 → 2026-02-27 · 2 obs
● 2026-02-26 19:38:04
● 2026-02-27 00:46:06
●NSns-813.awsdns-37.net2026-02-26 → 2026-02-27 · 2 obs
● 2026-02-26 19:38:04
● 2026-02-27 00:46:06
●NSns-91.awsdns-11.com2026-02-26 → 2026-02-27 · 2 obs
● 2026-02-26 19:38:04
● 2026-02-27 00:46:06
●A13.159.75.2272026-02-26 → 2026-02-27 · 2 obs
● 2026-02-26 19:38:04
● 2026-02-27 00:46:06
●A18.177.100.2042026-02-26 → 2026-02-27 · 2 obs
● 2026-02-26 19:38:04
● 2026-02-27 00:46:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpa.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...-
knowledge-library.jpns-813.awsdns-37.net, ns-1803.awsdns-33.co.uk, ns-91.awsdns-11.com, ns-1452.awsdns-53.org-

✅ Authoritative Response

Server: 205.251.195.45

NS records: ns-813.awsdns-37.net, ns-1803.awsdns-33.co.uk, ns-91.awsdns-11.com, ns-1452.awsdns-53.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowledge-library.jp (unsigned zone)

⏱️ Timing

Total: 664ms | Queries: -

📄 Records

TypeCountSample Data
A213.159.75.227, 18.177.100.204
NS4ns-1452.awsdns-53.org, ns-1803.awsdns-33.co.uk...
TXT1v=spf1 +ip4:54.249.106.12/32 +ip4:54.249
SOA1ns-813.awsdns-37.net awsdns-hostmaster.a

AI analysis

knowledge-library.jp points to two IP numbers: 13.159.75.227 and 18.177.100.204.

Other host names, for instance www.accept-eigyou.com, www.aqua-shinano.jp, kameyama.kyousei.dental, takafumi-office.jp and www.kaiketu-saimuseiri.jp share IP numbers with knowledge-library.jp.

knowledge-library.jp is delegated to four name servers: ns-91.awsdns-11.com, ns-813.awsdns-37.net, ns-1452.awsdns-53.org and ns-1803.awsdns-33.co.uk.

knowledge-library.jp shares name servers with other domains at least partially, for instance tinyelk.com, cedartreeuk.com, archewellphilanthropies.org, d1ki59phkeobjj.cloudfront.net and allaccessautobody.com.

Host names with two IP numbers:

ns-91.awsdns-11.com resolves to 2600:9000:5300:5b00::1 and 205.251.192.91.

ns-813.awsdns-37.net resolves to 2600:9000:5303:2d00::1 and 205.251.195.45.

ns-1452.awsdns-53.org resolves to 2600:9000:5305:ac00::1 and 205.251.197.172.

ns-1803.awsdns-33.co.uk resolves to 2600:9000:5307:b00::1 and 205.251.199.11.