212.4.138.0/24

Residential-proxy exits

Proxy exits

8

3.1% of its addresses · 30 days

Always-on exits

1

13% of its exits

Providers

36

selling exits here

Oct 8, 2026 – Nov 6, 2026

Exits seen per day

980 observations

Proxy providers listing exits

2Captcha
AnyIP
BartProxies
BirdProxies
BottingTools
ByteProxies
Byteful
CliProxy
Decodo
EnigmaProxy
FastProxy
FlashProxy
GSocks
Geonix
GonzoProxy
IPOasis
Infatica
LemonBright
LightningProxies
MangoProxy
NodeMaven
NodeProxy
NovProxy
NovaProxy
Oxylabs
Proxiware
Proxy-Seller
ProxyEmpire
Proxyma
RainProxy
Shifter
ThunderProxy
VantageProxies
VibeProxies
VitalExclusive
VitalProxy

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
212.4.128.0/19	8,192	CZ-CZNET-20080611	O2 Czech Republic, a.s. (ORG-STAN1-RIPE) · CZ	ALLOCATED PA	Jun 11, 2008	abuse@o2.cz
└ 212.4.138.32/28	16	SELFNET-CZ	Self Servis Ltd.	ASSIGNED PA	Oct 25, 2012	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.48/28	16	AVG-CZ	AVG Technologies CZ, s.r.o.	ASSIGNED PA	Jan 12, 2009	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.64/28	16	LANSERVIS	LANservis s.r.o., Prerov	ASSIGNED PA	Jan 12, 2009	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.80/29	8	SELFNET-CZ	Self Servis Ltd.	ASSIGNED PA	Oct 30, 2012	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.104/30	4	SELFNET-CZ	Self Servis Ltd.	ASSIGNED PA	Oct 25, 2012	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.108/30	4	SELFNET-CZ	Self Servis Ltd.	ASSIGNED PA	Oct 25, 2012	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.112/28	16	TISNOV-CZ	MU Tisnov	ASSIGNED PA	Oct 25, 2012	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.128/26	64	ENECOSNET	unknown	ASSIGNED PA	Jun 19, 2009	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.192/27	32	SELFNET-CZ	Self Servis Ltd.	ASSIGNED PA	Oct 25, 2012	abuse@o2.cz via CZ-CZNET-20080611
└ 212.4.138.224/27	32	FTTx_Tisnov	unknown	ASSIGNED PA	Jun 19, 2009	abuse@o2.cz via CZ-CZNET-20080611

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

256 addresses

Type	Addresses	Share	Ranges
Business	176	69%	9
Residential	80	31%	3

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Announced by

Covering announcement 212.4.128.0/19

Prefix: 212.4.128.0/19
Announced by: AS12570 O2 Czech Republic, a.s.
Type: Residential
Proxy exits: 87
Always-on exits: 12
RPKI: RPKI valid
Netname: CZ-CZNET-20080611
Registrant: O2 Czech Republic, a.s.
RIR: RIPE NCC

Origin network

AS12570

CZ

Name: O2 Czech Republic, a.s.
Type: Internet provider
Registered: Jul 28, 1999
Domain: o2.cz
Website: www.itself.cz/
Industry: Internet Service Provider (ISP)
Spamhaus ASN-DROP: not listed

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
212.4.128.0/19	AS12570	/19	RIPE	RPKI valid

IRR

Route objects on 212.4.128.0/19

Origin	Registry	Description	Maintainer	Modified
AS12570	RIPE	ITSELF	MNET-IP-MNT	Sep 27, 2018