IPLIST.NET - userback.io

Search for IP or hostnames:

userback.io checked at 2025-10-05T18:06:22.997Z 334ms 146/146/146 100% R:12

`userback.io`

NS	`ns-437.awsdns-54.com`
		A	2600:9000:5301:b500::1 ^{🇺🇸 Amazon}
			PTR	`ns-437.awsdns-54.com`
		A	205.251.193.181^{🇺🇸 Amazon}
			PTR	`ns-437.awsdns-54.com`
NS	`ns-695.awsdns-22.net`
		A	2600:9000:5302:b700::1 ^{🇺🇸 Amazon}
			PTR	`ns-695.awsdns-22.net`
		A	205.251.194.183^{🇺🇸 Amazon}
			PTR	`ns-695.awsdns-22.net`
NS	`ns-1184.awsdns-20.org`
		A	2600:9000:5304:a000::1 ^{🇺🇸 Amazon}
			PTR	`ns-1184.awsdns-20.org`
		A	205.251.196.160^{🇺🇸 Amazon}
			PTR	`ns-1184.awsdns-20.org`
MX	`aspmx.l.google.com`
		A	2a00:1450:400c:c02::1b ^{🇧🇪 Google}
			PTR	`wn-in-f27.1e100.net`
			PTR	`wn-in-x1b.1e100.net`
		A	142.251.168.27^{🇺🇸 Google}
			PTR	`wh-in-f27.1e100.net`
NS	`ns-1729.awsdns-24.co.uk`
		A	2600:9000:5306:c100::1 ^{🇺🇸 Amazon}
			PTR	`ns-1729.awsdns-24.co.uk`
		A	205.251.198.193^{🇺🇸 Amazon}
			PTR	`ns-1729.awsdns-24.co.uk`
MX	`alt1.aspmx.l.google.com`
		A	2a00:1450:4013:c1e::1b ^{🇳🇱 Google}
			PTR	`yugrqzs-in-f27.1e100.net`
		A	192.178.213.26^{🇺🇸 Google}
			PTR	`yugrqzs-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`
		A	2a00:1450:4025:c01::1a ^{🇵🇱 Google}
			PTR	`rd-in-f26.1e100.net`
		A	142.250.147.27^{🇺🇸 Google}
			PTR	`rd-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`
		A	2607:f8b0:4001:c70::1b ^{🇺🇸 Google}
			PTR	`yucbful-in-f27.1e100.net`
		A	192.178.209.26^{🇺🇸 Google}
			PTR	`yucbful-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`
		A	2607:f8b0:4024:c0d::1b ^{🇺🇸 Google}
			PTR	`mj-in-f27.1e100.net`
		A	192.178.152.27^{🇺🇸 Google}
			PTR	`mj-in-f27.1e100.net`
A	162.159.136.54^Cloudflare
A	162.159.137.54^Cloudflare

`io`

	NS	`a0.nic.io`
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`

rank #520907 globally
rank #2940 in the tld

Up

app.userback.io

static.userback.io

www.userback.io

api.userback.io

Starts with same word

userback.com.cn

userback.com.au

userback.com

userback.io

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AI analysis

userback.io is a parent of app.userback.io, static.userback.io, www.userback.io and api.userback.io.

userback.io resolves to two IP numbers: 162.159.136.54 and 162.159.137.54.

Other host names, for instance mutua.it, bulletproofmusician.com, www.bonline.com, business-sol.jp and chinacenter.net share IP numbers with userback.io.

userback.io is delegated to four name servers: ns-437.awsdns-54.com, ns-695.awsdns-22.net, ns-1184.awsdns-20.org and ns-1729.awsdns-24.co.uk.

userback.io shares some name servers with other domains, for example brussels.weepee.org, makelink.com, wsjk.org, mi-stagew01.com and bj-stc.com.

These name servers are commonly paired with ns-289.awsdns-36.com, ns-1941.awsdns-50.co.uk, ns-1021.awsdns-63.net, ns-1622.awsdns-10.co.uk, ns-575.awsdns-07.net, ns-1653.awsdns-14.co.uk and ns-546.awsdns-04.net.

Host names with two IP numbers

Two IPs per host:

ns-437.awsdns-54.com points to 2600:9000:5301:b500::1 and 205.251.193.181

ns-695.awsdns-22.net points to 2600:9000:5302:b700::1 and 205.251.194.183

ns-1184.awsdns-20.org points to 2600:9000:5304:a000::1 and 205.251.196.160

ns-1729.awsdns-24.co.uk points to 2600:9000:5306:c100::1 and 205.251.198.193

userback.io is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

userback.io shares some mail servers with other domains, at least partially; for instance man.fo, brokenfrontier.com, mydentalart.com, keadle.net and studiokhom.it.

these mail servers are often used together with the mail servers aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IPs:

Host aspmx.l.google.com has IPs 2a00:1450:400c:c02::1b and 142.251.168.27.

Host alt1.aspmx.l.google.com has IPs 2a00:1450:4013:c1e::1b and 192.178.213.26.

Host alt2.aspmx.l.google.com has IPs 2a00:1450:4025:c01::1a and 142.250.147.27.

Host alt3.aspmx.l.google.com has IPs 2607:f8b0:4001:c70::1b and 192.178.209.26.

Host alt4.aspmx.l.google.com has IPs 2607:f8b0:4024:c0d::1b and 192.178.152.27.

dbq