`chem-reference.com`

DNSSEC	⚠️ Not signed
NS	`dns101-1.jp1.ecl.ntt.com` ⭐
		A	153.153.145.99^{🇯🇵 OCN153.128.0.0/10 (AS4713) CIDR BLOCK NTT Communications Corporation OTEMACHI PLACE WEST TOWER 2-3-1 Otemachi, Chiyoda-ku Tokyo 100-8019 JAPAN}
			PTR	`153-153-145-99-revip-default.145.153.153.in-addr.arpa`
NS	`dns101-2.uk1.ecl.ntt.com`
		A	153.153.171.18^{🇯🇵 OCN153.128.0.0/10 (AS4713) CIDR BLOCK NTT Communications Corporation OTEMACHI PLACE WEST TOWER 2-3-1 Otemachi, Chiyoda-ku Tokyo 100-8019 JAPAN}
			PTR	`153-153-171-18-revip-jp2-default.171.153.153.in-addr.arpa`
NS	`dns101-3.us1.ecl.ntt.com`
		A	180.12.186.2^{🇯🇵 OCN180.0.0.0/10 (AS4713) CIDR BLOCK 89 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
			PTR	`180-12-186-2-revip-jp5-default.186.12.180.in-addr.arpa`
NS	`dns101-4.sg1.ecl.ntt.com`
		A	180.55.77.106^{🇯🇵 OCN180.0.0.0/10 (AS4713) CIDR BLOCK 89 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN}
			PTR	`180-55-77-106-revip-jp6-default.77.55.180.in-addr.arpa`
SOA	`dns101-1.jp1.ecl.ntt.com`ecl@ntt.com serial=1

`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=1775194267

Subdomains

www.chem-reference.com

Same first word

chem-reference.com

DNS History

6 records (4 active, 2 former)

●NSdns101-1.jp1.ecl.ntt.com2026-03-19 → 2026-04-03 · 3 obs

○ 2017-04-07 00:43:28
● 2026-03-19 12:02:08
● 2026-04-03 05:55:32

●NSdns101-2.uk1.ecl.ntt.com2026-03-19 → 2026-04-03 · 3 obs

○ 2017-04-07 00:43:28
● 2026-03-19 12:02:08
● 2026-04-03 05:55:32

●NSdns101-3.us1.ecl.ntt.com2026-03-19 → 2026-04-03 · 3 obs

○ 2017-04-07 00:43:28
● 2026-03-19 12:02:08
● 2026-04-03 05:55:32

●NSdns101-4.sg1.ecl.ntt.com2026-03-19 → 2026-04-03 · 3 obs

○ 2017-04-07 00:43:28
● 2026-03-19 12:02:08
● 2026-04-03 05:55:32

○NSns6-tk01.ocn.ad.jp2015-05-07 → 2017-04-07 · 4 obs

● 2015-05-07 02:14:16
● 2017-04-07 00:43:28
○ 2026-03-19 12:02:08
○ 2026-04-03 05:55:32

○NSns6-tk02.ocn.ad.jp2015-05-07 → 2017-04-07 · 4 obs

● 2015-05-07 02:14:16
● 2017-04-07 00:43:28
○ 2026-03-19 12:02:08
○ 2026-04-03 05:55:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net...	-
chem-reference.com	dns101-1.jp1.ecl.ntt.com, dns101-2.uk1.ecl.ntt.com, dns101-3.us1.ecl.ntt.com, dns101-4.sg1.ecl.ntt.com	4 records

✅ Authoritative Response

Server:153.153.145.99

NS records: dns101-1.jp1.ecl.ntt.com, dns101-2.uk1.ecl.ntt.com, dns101-3.us1.ecl.ntt.com, dns101-4.sg1.ecl.ntt.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for chem-reference.com (unsigned zone)

⏱️ Timing

Total: 589ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`dns101-3.us1.ecl.ntt.com, dns101-2.uk1.ecl.ntt.com...`
SOA	1	`dns101-1.jp1.ecl.ntt.com ecl.ntt.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns101-1.jp1.ecl.ntt.com, dns101-2.uk1.ecl.ntt.com, dns101-3.us1.ecl.ntt.com...)

Analysis

Hierarchy

chem-reference.com is the parent of www.chem-reference.com.

Name Servers

chem-reference.com is delegated to four name servers: dns101-1.jp1.ecl.ntt.com, dns101-4.sg1.ecl.ntt.com, dns101-2.uk1.ecl.ntt.com and dns101-3.us1.ecl.ntt.com.

chem-reference.com at least partially shares name servers with other domains, for instance fanuc.co.jp, np-manager-co.com, utsunomiya-keirin.jp, nickel.co.jp and library.koganei.tokyo.jp.

these name servers are often used together with dns102-1.jp1.ecl.ntt.com, dns102-4.sg1.ecl.ntt.com, dns102-2.uk1.ecl.ntt.com and dns102-3.us1.ecl.ntt.com.

Host names with one IP number: dns101-1.jp1.ecl.ntt.com points to 153.153.145.99; dns101-4.sg1.ecl.ntt.com points to 180.55.77.106; dns101-2.uk1.ecl.ntt.com points to 153.153.171.18; dns101-3.us1.ecl.ntt.com points to 180.12.186.2.

chem-reference.com - robtex.com