CDT-AS

AS25512 · The Czech Republic · CZ · RIPENCC

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Upstream providers

Downstream customers

118k

v4 addresses

v6 /32s

Provider History

Active Possible trial (<90d) Historical

Current Providers

Provider	First Seen	Last Seen	Peers	Confidence
AS174 AS174	2024-11-01 1y 6mo	2026-05-02	186 peers AS209 AS680 AS999 AS1031 AS1103 AS1140 AS1299 AS2152 AS2500 AS2914 AS3214 AS3216 AS3257 AS3320 AS3491 AS3549 AS4128 AS4181 AS4641 AS4775 AS5392 AS5394 AS5413 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS7768 AS8220 AS8283 AS8298 AS8426 AS8455 AS8529 AS8582 AS8660 AS8888 AS9002 AS12307 AS12859 AS12956 AS12969 AS13030 AS13237 AS14041 AS14630 AS14907 AS15562 AS16276 AS16347 AS16552 AS17350 AS17660 AS19754 AS20080 AS20514 AS20811 AS23367 AS23673 AS25091 AS27986 AS28824 AS28917 AS29479 AS29691 AS30950 AS31027 AS32590 AS34927 AS35266 AS35280 AS35600 AS35710 AS36924 AS38001 AS38726 AS39642 AS40387 AS41095 AS41811 AS42473 AS42541 AS45049 AS45489 AS47147 AS48112 AS48185 AS48237 AS49028 AS49434 AS49544 AS49605 AS50304 AS50628 AS50877 AS51088 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57381 AS57777 AS57821 AS57866 AS58308 AS58511 AS59414 AS60924 AS61832 AS63927 AS64475 AS132884 AS134823 AS138685 AS150369 AS151704 AS197580 AS199524 AS199938 AS209823 AS210937 AS212317 AS216285 AS262462 AS263009 AS263152 AS264409 AS264479 AS266213 AS267613 AS271253 AS398465
TWELVE99 AS1299	2024-11-01 1y 6mo	2026-05-02	112 peers AS209 AS260 AS701 AS999 AS1031 AS1103 AS1273 AS2152 AS2500 AS2914 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6453 AS6730 AS6762 AS6830 AS6881 AS7018 AS7768 AS8220 AS8426 AS8582 AS12956 AS14315 AS14537 AS15562 AS16260 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28624 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS41095 AS41811 AS47147 AS47692 AS47957 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS61832 AS64475 AS132884 AS150369 AS151704 AS199524 AS206271 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS268976 AS271253 AS328206 AS328964 AS398465

Customers (21)

Customer	Country	First Seen	Last Seen	IPs	Peers
ASITPROFI AS3161	CZ	2024-11-01 1y 6mo	2026-05-02	512	91 peers AS209 AS999 AS1031 AS1103 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS15562 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS64475 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
NIXCZ AS6881	CZ	2024-11-01 1y 6mo	2026-05-02	2.3k	25 peers AS209 AS999 AS3491 AS6453 AS6762 AS12956 AS16276 AS17660 AS27986 AS38001 AS49544 AS52873 AS132884 AS197580 AS199524 AS216285
kazaczsro AS20609	CZ	2024-11-01 1y 6mo	2026-05-02	2k	76 peers AS209 AS999 AS1031 AS1103 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8426 AS8582 AS12956 AS16276 AS16552 AS17350 AS17660 AS20080 AS27986 AS28917 AS32590 AS34927 AS38001 AS49434 AS49544 AS49605 AS51185 AS52468 AS52873 AS53062 AS53828 AS55720 AS61832 AS132847 AS132884 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
OMEGAPLUS-AS AS35046	CZ	2024-11-01 1y 6mo	2026-05-02	7.2k	34 peers AS197580 AS216285
RETE-AS AS43507	CZ	2024-11-01 1y 6mo	2026-05-02	12k	88 peers AS209 AS999 AS1031 AS1103 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS15562 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS61832 AS64475 AS132847 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
ECONOMIA-CZ AS43614	CZ	2024-11-01 1y 6mo	2026-05-02	3.1k	89 peers AS209 AS260 AS701 AS999 AS1031 AS1103 AS1273 AS2500 AS2914 AS3257 AS3320 AS3491 AS4128 AS4775 AS5580 AS6453 AS6730 AS6762 AS6830 AS6894 AS7018 AS7768 AS8220 AS8426 AS8582 AS12956 AS14315 AS14537 AS15562 AS16260 AS16276 AS16552 AS17350 AS17660 AS27986 AS31554 AS32590 AS35280 AS37497 AS38001 AS47147 AS47957 AS48112 AS49544 AS49605 AS52075 AS52873 AS53062 AS61832 AS64475 AS148968 AS150369 AS197580 AS199524 AS206271 AS216285 AS262462 AS264479 AS266213 AS267613 AS271253 AS328206 AS328840 AS398465
PH AS47131	CZ	2024-11-01 1y 6mo	2026-05-02	2k	75 peers AS209 AS999 AS1031 AS2152 AS2500 AS2914 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS12956 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS32590 AS34927 AS35280 AS35710 AS38001 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS59414 AS64475 AS132884 AS134823 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
SUPRO-AS AS47868	CZ	2024-11-01 1y 6mo	2026-05-02	4.1k	70 peers AS209 AS260 AS701 AS999 AS1031 AS1103 AS1273 AS2500 AS2914 AS3257 AS3320 AS3491 AS4128 AS4775 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS7768 AS8220 AS8426 AS8582 AS12956 AS14315 AS14537 AS15562 AS16260 AS16276 AS16552 AS17350 AS17660 AS27986 AS31554 AS32590 AS35280 AS37497 AS38001 AS47147 AS47957 AS48112 AS49544 AS49605 AS52075 AS52873 AS61832 AS64475 AS148968 AS150369 AS197580 AS199524 AS206271 AS216285 AS262462 AS264479 AS266213 AS271253 AS328206 AS328840 AS328964 AS398465
AVX_AS AS50975	CZ	2024-11-01 1y 6mo	2026-05-02	2k	76 peers AS209 AS999 AS1031 AS2152 AS2500 AS2914 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS12956 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS32590 AS34927 AS35280 AS38001 AS41811 AS47692 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS59414 AS61832 AS132884 AS134823 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
ModernTV AS51331	CZ	2024-11-01 1y 6mo	2026-05-02	2.3k	80 peers AS701 AS2914 AS3257 AS3320 AS3491 AS5580 AS6762 AS6830 AS7018 AS8582 AS12956 AS16260 AS17350 AS27986 AS32590 AS47147 AS49544 AS52873 AS216285 AS262462 AS264479 AS267613 AS271253 AS398465
ASNETDELUXE AS51524	CZ	2024-11-01 1y 6mo	2026-05-02	2k	87 peers AS209 AS999 AS1031 AS1103 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS15562 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS61832 AS64475 AS132847 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
ALBERON_AS AS56450	CZ	2024-11-01 1y 6mo	2026-05-02	4.6k	88 peers AS209 AS260 AS701 AS999 AS1031 AS2914 AS3257 AS3320 AS3491 AS4128 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS7768 AS8426 AS12956 AS14315 AS14537 AS16260 AS16276 AS16552 AS17350 AS17660 AS27986 AS32590 AS35280 AS37497 AS38001 AS47147 AS49544 AS49605 AS52873 AS53062 AS64475 AS148968 AS197580 AS199524 AS206271 AS262462 AS264479 AS266213 AS267613 AS271253 AS328206 AS398465
ASMIRNETCZ AS56827	CZ	2024-11-01 1y 6mo	2026-05-02	1k	88 peers AS209 AS999 AS1031 AS1103 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS15562 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS61832 AS64475 AS132847 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
AS_RVTECH AS60275	CZ	2024-11-01 1y 6mo	2026-05-02	—	69 peers AS209 AS701 AS999 AS1031 AS1273 AS2914 AS3320 AS3491 AS4128 AS4775 AS6453 AS6762 AS7018 AS8220 AS12956 AS14537 AS16276 AS17350 AS17660 AS27986 AS31554 AS35280 AS37497 AS48112 AS49544 AS52873 AS197580 AS199524 AS206271 AS216285 AS262462 AS266213 AS271253 AS328206 AS328840
ASINET4YOU AS197550	CZ	2024-11-01 1y 6mo	2026-05-02	4.1k	88 peers AS209 AS999 AS1031 AS1103 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS15562 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS61832 AS64475 AS132847 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
CADCANET AS200355	SK	2024-11-01 1y 6mo	2026-05-02	256	88 peers AS209 AS999 AS1031 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS14315 AS15562 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS64475 AS132847 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
Arenis AS200678	CZ	2024-11-01 1y 6mo	2026-05-02	256	179 peers AS209 AS999 AS1031 AS1103 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS14315 AS15562 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS61832 AS64475 AS132847 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
THOSTING-AS AS200828	CZ	2024-11-01 1y 6mo	2026-05-02	1k	82 peers AS209 AS999 AS1031 AS2152 AS2914 AS3214 AS3257 AS3491 AS3549 AS4128 AS4641 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8426 AS8582 AS12956 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28917 AS32590 AS34927 AS35280 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS132847 AS134823 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS398465
TESUNET AS213387	CZ	2024-11-01 1y 6mo	2026-05-02	256	88 peers AS209 AS999 AS1031 AS1103 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS14315 AS15562 AS16276 AS16552 AS17350 AS17660 AS20080 AS27986 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS61832 AS64475 AS132847 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS328964 AS398465
cz-fresh AS206159	CZ	2026-01-31 3mo	2026-05-02	256	88 peers AS209 AS999 AS1031 AS2152 AS2500 AS2914 AS3214 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5392 AS5580 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS12956 AS14315 AS15562 AS16260 AS16276 AS16552 AS17350 AS17660 AS20080 AS23673 AS27986 AS28624 AS28917 AS29140 AS32590 AS34927 AS35280 AS35710 AS38001 AS41095 AS41811 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53062 AS53828 AS55720 AS57821 AS64475 AS132884 AS134823 AS150369 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS264479 AS266213 AS267613 AS268976 AS328964 AS398465
SKODA-AUTO AS20708	CZ	2026-02-16 2mo	2026-05-02	256	154 peers AS209 AS999 AS1031 AS2152 AS2914 AS3491 AS3549 AS4128 AS4641 AS6453 AS6762 AS7018 AS12956 AS16276 AS17350 AS17660 AS20080 AS27986 AS34927 AS38001 AS48112 AS49544 AS51185 AS52468 AS52873 AS55720 AS151704 AS197580 AS199524 AS216285 AS262462 AS263152 AS264409 AS266213

Network Size

IPv4 and IPv6 prefixes originated over time

v4 prefixes

118k

v4 addresses

v6 prefixes

v6 /32s

Downstream Customers Over Time

Count of distinct downstream customers per snapshot date

Unclassified Peers Over Time

Count of unclassified adjacencies per snapshot date

Event Log

All New Transit Lost Transit Possible Trial Renewal Approaching

2026-04-21

Lost Transit

prgaero AS216450 → lost provider CDT-AS AS25512

Confidence: 85% Duration: 360d

⇄

2024-12-02

Lost Transit

KTUO-AS AS51449 → lost provider CDT-AS AS25512

Confidence: 85%

⇄

2024-11-28

New Transit

OMEGAPLUS-AS AS35046 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-13

Lost Transit

MUZO-AS AS21241 → lost provider CDT-AS AS25512

Confidence: 85%

⇄

2024-11-02

New Transit

TESUNET AS213387 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

THOSTING-AS AS200828 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

Arenis AS200678 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

CADCANET AS200355 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

ASINET4YOU AS197550 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

AS_RVTECH AS60275 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

ASMIRNETCZ AS56827 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

RESAL-AS AS56717 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

ALBERON_AS AS56450 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

ASNETDELUXE AS51524 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

ModernTV AS51331 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

AVX_AS AS50975 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

SUPRO-AS AS47868 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

RCO-AS AS47767 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

PH AS47131 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

ECONOMIA-CZ AS43614 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

RETE-AS AS43507 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

CDT-AS AS25512 → added provider TWELVE99 AS1299

Confidence: 90%

⇄

2024-11-02

New Transit

CDT-AS AS25512 → added provider AS174 AS174

Confidence: 90%

⇄

2024-11-02

New Transit

kazaczsro AS20609 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

NIXCZ AS6881 → added provider CDT-AS AS25512

Confidence: 90%

⇄

2024-11-02

New Transit

ASITPROFI AS3161 → added provider CDT-AS AS25512

Confidence: 90%

⇄

Renewal Calendar

Active providers first seen 11–13 months ago — possible annual contract renewals

This data is available to subscribers.