ComSource

AS199803 · CZ · RIPENCC

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Upstream providers

Downstream customers

1.5k

v4 addresses

v6 /32s

Provider History

Active Possible trial (<90d) Historical

Current Providers

Addr family: All IPv4 IPv6

Provider	First Seen	Last Seen	Peers	Confidence	AF
AS3356 AS3356	2024-09-01 1y 9mo	2026-06-09	235 peers AS209 AS513 AS917 AS999 AS1031 AS1103 AS1213 AS2500 AS2914 AS3257 AS3320 AS3491 AS3549 AS4641 AS4775 AS5580 AS6082 AS6424 AS6461 AS6730 AS6762 AS6830 AS6894 AS8220 AS8426 AS8582 AS8888 AS12779 AS12956 AS14537 AS14907 AS15562 AS15605 AS16276 AS16552 AS17350 AS19151 AS20080 AS20912 AS21700 AS23673 AS24516 AS28917 AS29140 AS32590 AS34549 AS35280 AS35710 AS37239 AS37468 AS37697 AS38001 AS38008 AS38880 AS44901 AS45437 AS45489 AS46997 AS47692 AS48070 AS48112 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53828 AS55720 AS56457 AS57821 AS58057 AS59414 AS61049 AS61138 AS61568 AS61832 AS63956 AS64475 AS132825 AS134823 AS136557 AS142271 AS142289 AS150369 AS151326 AS151704 AS197580 AS199524 AS200612 AS206499 AS207841 AS212271 AS213151 AS215628 AS216285 AS271253 AS328840 AS328964		v4 v6
TWELVE99 AS1299	2024-09-01 1y 9mo	2026-06-09	177 peers AS174 AS209 AS701 AS917 AS999 AS1000 AS1031 AS1103 AS1213 AS1351 AS2500 AS2914 AS3130 AS3257 AS3320 AS3399 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6082 AS6424 AS6453 AS6461 AS6730 AS6762 AS6830 AS7018 AS7768 AS8220 AS8426 AS8888 AS11039 AS12350 AS12779 AS12956 AS13830 AS14315 AS14537 AS15605 AS16276 AS16552 AS17350 AS17660 AS19151 AS19529 AS20080 AS20912 AS21700 AS24516 AS28329 AS28624 AS31510 AS32590 AS34177 AS34800 AS37239 AS37468 AS38001 AS40864 AS44901 AS45437 AS47147 AS49434 AS49544 AS51185 AS52075 AS52468 AS52873 AS53828 AS55720 AS56457 AS58717 AS61049 AS61568 AS61832 AS63956 AS64112 AS132884 AS134823 AS137409 AS142289 AS151704 AS154335 AS197580 AS199524 AS200612 AS202365 AS216285 AS262427 AS262462 AS263009 AS263541 AS264409 AS264479 AS266213 AS271253 AS327960 AS328840 AS328964 AS398465		v4 v6

Customers (9)

Addr family: All IPv4 IPv6

Customer	Country	First Seen	Last Seen	IPs	Peers	AF
ACTIVE24-AS AS25234	CZ	2024-09-01 1y 9mo	2026-06-09	7.7k	121 peers AS209 AS3549	v4 v6
VNET-AS AS29405	SK	2024-09-01 1y 9mo	2026-06-09	2.8k	125 peers AS174 AS209 AS917 AS999 AS1031 AS1103 AS1213 AS1351 AS2500 AS2914 AS3130 AS3257 AS3320 AS3399 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6082 AS6424 AS6453 AS6461 AS6730 AS6762 AS6830 AS6894 AS7018 AS8220 AS8426 AS8582 AS8888 AS11039 AS12779 AS12956 AS14315 AS14907 AS15562 AS15605 AS16276 AS16552 AS17660 AS19151 AS19529 AS20080 AS20912 AS21700 AS24516 AS28917 AS29140 AS31510 AS32590 AS34549 AS34800 AS35710 AS38001 AS38880 AS40864 AS44901 AS45437 AS45489 AS47692 AS48070 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS53828 AS55720 AS56457 AS57821 AS58057 AS61049 AS61138 AS61568 AS61832 AS63956 AS64112 AS64475 AS132825 AS132884 AS134823 AS136557 AS137409 AS142271 AS142289 AS150369 AS151326 AS151704 AS197580 AS199524 AS200612 AS202365 AS206499 AS207841 AS212271 AS213151 AS216285 AS262427 AS327960 AS328840	v4 v6
AS35236 AS35236	CZ	2024-09-01 1y 9mo	2026-06-09	1k	143 peers AS209 AS999 AS2914 AS3549 AS6730 AS6762 AS8220 AS12956 AS15562 AS16276 AS16552 AS19151 AS29140 AS32590 AS35280 AS35710 AS44901 AS48070 AS49434 AS49544 AS49605 AS51185 AS52075 AS61049 AS63956 AS64475 AS142271 AS151326 AS207841	v4 v6
COOLHOUSING-AS AS35592	CZ	2024-09-01 1y 9mo	2026-06-09	14k	192 peers AS174 AS209 AS701 AS999 AS1031 AS1103 AS1351 AS2500 AS2914 AS3130 AS3257 AS3320 AS3399 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6082 AS6424 AS6453 AS6730 AS6762 AS6830 AS6894 AS7018 AS8220 AS8426 AS8582 AS12779 AS12956 AS14315 AS15562 AS16276 AS16552 AS17350 AS17660 AS19151 AS20080 AS20912 AS21700 AS24516 AS28917 AS29140 AS31510 AS32590 AS35710 AS37239 AS37468 AS37697 AS44901 AS45437 AS47147 AS48070 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS52873 AS53828 AS55720 AS56457 AS57821 AS61049 AS61138 AS61568 AS61832 AS63956 AS64112 AS64475 AS132825 AS132884 AS136557 AS151326 AS197580 AS199524 AS200612 AS207841 AS212271 AS216285 AS262427 AS271253 AS327960 AS328840 AS398465	v4 v6
WEB4U AS39790	CZ	2024-09-01 1y 9mo	2026-06-09	4.6k	142 peers AS209 AS701 AS2914 AS3257 AS3320 AS3491 AS5580 AS6453 AS6461 AS6762 AS6830 AS7018 AS8582 AS12956 AS15562 AS17350 AS19529 AS47147 AS52873 AS64112 AS136557 AS212271 AS216285 AS271253 AS328840 AS398465	v4 v6
WEBSUPPORT-SRO-SK-AS AS51013	SK	2024-09-01 1y 9mo	2026-06-09	1.3k	224 peers AS209 AS999 AS1031 AS1103 AS1213 AS2500 AS2914 AS3130 AS3257 AS3320 AS3399 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6082 AS6424 AS6453 AS6461 AS6730 AS6762 AS6830 AS7018 AS8220 AS8426 AS8582 AS8888 AS11039 AS12956 AS14315 AS14907 AS15562 AS15605 AS16276 AS17660 AS19151 AS19529 AS20080 AS20912 AS21700 AS24516 AS28917 AS29140 AS32590 AS35710 AS38001 AS40864 AS44901 AS45437 AS45489 AS48070 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS53828 AS55720 AS56457 AS57821 AS61049 AS63956 AS64475 AS132884 AS134823 AS136557 AS137409 AS142271 AS142289 AS150369 AS151326 AS151704 AS197580 AS199524 AS200612 AS207841 AS216285	v4 v6
AS_KBCGROUP_CSOBCZ AS205233	BE	2024-09-01 1y 9mo	2026-06-09	7.2k	143 peers AS209 AS999 AS1031 AS2500 AS2914 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS6082 AS6453 AS6461 AS6730 AS6762 AS6830 AS7018 AS11039 AS12956 AS14907 AS15562 AS15605 AS16276 AS17660 AS20080 AS28917 AS29140 AS32590 AS35710 AS38880 AS40864 AS45489 AS49544 AS49605 AS51185 AS52075 AS52468 AS53828 AS55720 AS57821 AS61832 AS64475 AS132884 AS142289 AS150369 AS151704 AS199524 AS264479	v4 v6
InternetTV AS206142	US	2024-09-01 1y 9mo	2026-06-09	256	135 peers AS174 AS209 AS917 AS999 AS1031 AS1103 AS1351 AS2500 AS2914 AS3130 AS3257 AS3320 AS3399 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6082 AS6424 AS6453 AS6461 AS6730 AS6762 AS6830 AS6894 AS7018 AS8220 AS8426 AS8582 AS8888 AS11039 AS12779 AS12956 AS14315 AS14537 AS15562 AS15605 AS16276 AS16552 AS17660 AS19151 AS19529 AS20080 AS20912 AS21700 AS23673 AS24516 AS28917 AS29140 AS31510 AS32590 AS34800 AS35280 AS35710 AS37239 AS37468 AS37697 AS38001 AS38008 AS38880 AS40864 AS44901 AS45437 AS46997 AS47692 AS48070 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS53828 AS55720 AS56457 AS57821 AS59414 AS61049 AS61138 AS61568 AS61832 AS63956 AS64112 AS64475 AS132825 AS132884 AS134823 AS136557 AS137409 AS142271 AS142289 AS151326 AS197580 AS199524 AS200612 AS202365 AS207841 AS212271 AS215628 AS216285 AS327960 AS328840 AS328964	v4 v6
ALZACZ-AS AS206591	CZ	2024-09-01 1y 9mo	2026-06-09	256	142 peers AS174 AS209 AS917 AS999 AS1031 AS1103 AS1213 AS1351 AS2500 AS2914 AS3130 AS3257 AS3320 AS3399 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6082 AS6424 AS6453 AS6461 AS6730 AS6762 AS6830 AS6894 AS7018 AS8220 AS8426 AS8582 AS8888 AS11039 AS12779 AS12956 AS14315 AS14907 AS15562 AS15605 AS16276 AS16552 AS17660 AS19151 AS19529 AS20080 AS20912 AS21700 AS24516 AS28917 AS29140 AS31510 AS32590 AS34800 AS35710 AS37239 AS37468 AS37697 AS38001 AS38880 AS40864 AS44901 AS45437 AS45489 AS47692 AS48070 AS49434 AS49544 AS49605 AS51185 AS52075 AS52468 AS53828 AS55720 AS56457 AS57821 AS61049 AS61138 AS61568 AS61832 AS63956 AS64112 AS64475 AS132825 AS132884 AS134823 AS136557 AS137409 AS142271 AS142289 AS150369 AS151326 AS151704 AS197580 AS199524 AS200612 AS202365 AS207841 AS212271 AS216285 AS327960 AS328840 AS328964	v4 v6

Network Size

IPv4 and IPv6 prefixes originated over time

v4 prefixes

1.5k

v4 addresses

v6 prefixes

v6 /32s

Downstream Customers Over Time

Count of distinct downstream customers per snapshot date

Peering Links Over Time

Count of unclassified adjacencies per snapshot date

Event Log

All New Transit Lost Transit Possible Trial Renewal Approaching

2025-10-30

Lost Transit

FASTER-AS AS24641 → lost provider ComSource AS199803

Confidence: 85% Duration: 423d

⇄

2025-10-23

Lost Transit

ComSource AS199803 → lost provider AS6939 AS6939

Confidence: 85% Duration: 314d

⇄

2025-10-16

New Transit

ComSource AS199803 → added provider AS6939 AS6939

Confidence: 90%

⇄

2025-09-11

Lost Transit

DataSpring AS201730 → lost provider ComSource AS199803

Confidence: 85% Duration: 374d

⇄

2025-08-28

Lost Transit

ComSource AS199803 → lost provider AS6939 AS6939

Confidence: 85% Duration: 258d

⇄

2025-08-16

Lost Transit

ComSource AS199803 → lost provider AS6939 AS6939

Confidence: 85% Duration: 246d

⇄

2025-03-22

Lost Transit

SLOVANET AS8778 → lost provider ComSource AS199803

Confidence: 85% Duration: 195d

⇄

2024-11-29

Lost Transit

geetoo-sk AS205055 → lost provider ComSource AS199803

Confidence: 85% Duration: 88d

⇄

2024-11-08

Possible Trial

geetoo-cz AS202682 → possible trial with ComSource AS199803

Confidence: 60% Duration: 28d

⇄

2024-11-02

Lost Transit

geetoo-cz AS202682 → lost provider ComSource AS199803

Confidence: 85% Duration: 61d

⇄

2024-09-08

New Transit

SLOVANET AS8778 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

ALZACZ-AS AS206591 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

InternetTV AS206142 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

AS_KBCGROUP_CSOBCZ AS205233 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

geetoo-sk AS205055 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

geetoo-cz AS202682 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

DataSpring AS201730 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

ComSource AS199803 → added provider AS3356 AS3356

Confidence: 90%

⇄

2024-09-02

New Transit

ComSource AS199803 → added provider TWELVE99 AS1299

Confidence: 90%

⇄

2024-09-02

New Transit

WEBSUPPORT-SRO-SK-AS AS51013 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

WEB4U AS39790 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

COOLHOUSING-AS AS35592 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

AS35236 AS35236 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

VNET-AS AS29405 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

ACTIVE24-AS AS25234 → added provider ComSource AS199803

Confidence: 90%

⇄

2024-09-02

New Transit

FASTER-AS AS24641 → added provider ComSource AS199803

Confidence: 90%

⇄

Renewal Calendar

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

This data is available to subscribers.