`swg-proxy.itcom21.com`

DNSSEC	⚠️ Not signed
A	118.151.185.82^{🇯🇵 IIJ-AS118.151.128.0/18 IIJ IPv4 BLOCK ( AS2497 )}
		PTR	`swg-proxy.itcom21.com`
NS	`dns-b.iij.ad.jp` ⭐
		A	2001:240:bb81::28:51^{🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 )}
			PTR	`s020.d-53.biz`
		A	202.32.219.51^{🇯🇵 IIJ-AS202.32.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
			PTR	`s020.d-53.biz`
NS	`dns0.iij-swg.jp`
		A	2001:240:bb81::28:53^{🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 )}
			PTR	`s102.d-53.biz`
		A	202.32.219.53^{🇯🇵 IIJ-AS202.32.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
			PTR	`s102.d-53.biz`
NS	`dns1.iij-swg.jp`
		A	2001:240:bb81::29:113^{🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 )}
			PTR	`s102.d-53.net`
		A	210.138.20.113^{🇯🇵 IIJ-AS210.138.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
			PTR	`s102.d-53.net`
MX	`bh0.iij.ad.jp` ⭐
		A	202.32.78.22^{🇯🇵 IIJ-AS202.32.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
SOA	`dns-b.iij.ad.jp`dns-managers@iij.ad.jp serial=1636534009

`itcom21.com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns000.d-53.net` ⭐
	NS	`ns017-p3f9sk5npcu30u1r.p.d-53.info`
	NS	`ns017-p3f9sk5npcu30u1r.p.d-53.jp`
	NS	`ns017-p3f9sk5npcu30u1r.p.d-53.org`
	MX	`mx.securemx.jp` ⭐
	TXT	`google-site-verification=Mebx_P2kb8P0FBWk_VXUlLAROIPi3qpzJbNmWVQg6ro`
	TXT	`v=spf1 include:spf.securemx.jp include:_spf.google.com ~all`
	SOA	`ns000.d-53.net`dns-managers@iij.ad.jp serial=353

PTR for

82.185.151.118.in-addr.arpa

DNS History

6 records (5 active, 1 former)

●NSdns-b.iij.ad.jp2015-06-11 → 2026-05-12 · 2 obs

● 2015-06-11 02:21:34
● 2026-05-12 15:49:44

○NSdns-c.iij.ad.jp2015-06-11 → 2016-04-02 · 4 obs

● 2015-06-11 02:21:34
● 2016-04-02 13:30:32
○ 2026-03-30 10:27:22
○ 2026-05-12 15:49:44

●NSdns0.iij-swg.jp2026-03-30 → 2026-05-12 · 3 obs

○ 2016-04-02 13:30:32
● 2026-03-30 10:27:22
● 2026-05-12 15:49:44

●NSdns1.iij-swg.jp2026-03-30 → 2026-05-12 · 3 obs

○ 2016-04-02 13:30:32
● 2026-03-30 10:27:22
● 2026-05-12 15:49:44

●MXbh0.iij.ad.jp2015-06-11 → 2026-05-12 · 2 obs

● 2015-06-11 02:21:34
● 2026-05-12 15:49:44

●A118.151.185.822015-06-11 → 2026-05-12 · 2 obs

● 2015-06-11 02:21:34
● 2026-05-12 15:49:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
itcom21.com	ns017-p3f9sk5npcu30u1r.p.d-53.info, ns017-p3f9sk5npcu30u1r.p.d-53.jp, ns017-p3f9sk5npcu30u1r.p.d-53.org	-
swg-proxy.itcom21.com	dns0.iij-swg.jp, dns1.iij-swg.jp	-

✅ Authoritative Response

Server:202.32.219.53

NS records: dns0.iij-swg.jp, dns1.iij-swg.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for swg-proxy.itcom21.com (unsigned zone)

⏱️ Timing

Total: 2509ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`118.151.185.82`
NS	2	`dns1.iij-swg.jp, dns0.iij-swg.jp`
MX	1	`bh0.iij.ad.jp (pri: 10)`
SOA	1	`dns-b.iij.ad.jp dns-managers.iij.ad.jp`

Analysis

IP Addresses

swg-proxy.itcom21.com resolves to one IP number: 118.151.185.82.

Name Servers

swg-proxy.itcom21.com is delegated to three name servers: dns0.iij-swg.jp, dns1.iij-swg.jp and dns-b.iij.ad.jp.

swg-proxy.itcom21.com at least partially shares name servers with other domains, including nlt-technologies.co.jp, 149.238.202.in-addr.arpa, 92.138.210.bf.2iij.net, 6.180.203.in-addr.arpa and 43.32.202.bf.2iij.net.

These name servers are commonly used with ns000.d-53.net, dns-c.iij.ad.jp, rev.iij-dns.jp, rev.iij-dns.net, ns1.dox.jp and ns2.dox.jp.

Host names with two IP numbers:

dns0.iij-swg.jp: 2001:240:bb81::28:53 and 202.32.219.53

dns1.iij-swg.jp: 2001:240:bb81::29:113 and 210.138.20.113

dns-b.iij.ad.jp: 2001:240:bb81::28:51 and 202.32.219.51

Mail Servers

A single mail server handles swg-proxy.itcom21.com, bh0.iij.ad.jp.

swg-proxy.itcom21.com shares the same mail server setup as other domains, for instance 58.54.30.125.dy.iij4u.or.jp, 183.54.138.58.dy.bbexcite.jp, 36.173.151.118.rev.iijgio.jp, 206.90.128.210.bf.2iij.net and 79.13.111.219.st.bbexcite.jp.

Host name bh0.iij.ad.jp resolves to a single IP: 202.32.78.22.

swg-proxy.itcom21.com - robtex.com