AS Name: GBTC-TW

Description: Great Taipei Broadband Company Ltd. Internet Service Provider 8F, 33, Lane 11, Kwang Fu N. Rd.,Taipei,Taiwan 105,R.O.C.

Registry: APNIC

Imports from (4)

AS4780 AS4747 AS413 AS9416

Exports to (4)

AS4780 AS18413 AS4747 AS9416

⚠️ CIRCL BGP Security Rank: 0.0234% (position 8140)

aut-num:        AS18413
as-name:        GBTC-TW
descr:          Great Taipei Broadband Company Ltd.
descr:          Internet Service Provider
descr:          8F, 33, Lane 11, Kwang Fu N. Rd.,Taipei,Taiwan 105,R.O.C.
country:        TW
import:         from AS4780 action pref=200; accept ANY
import:         from AS4747 action pref=100; accept AS413
import:         from AS4747 action pref=300; accept ANY
import:         from AS9416 action pref=400; accept ANY
export:         to AS4780 announce as18413
export:         to AS4747 announce as18413
export:         to AS9416 announce as18413
default:        to AS4780 action pref=100;networks ANY
admin-c:        TK223-AP
admin-c:        TK223-AP
tech-c:         TK223-AP
abuse-c:        AT939-AP
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-GTBC-TW
last-modified:  2025-11-06T09:25:34Z
source:         APNIC

Direct Membership

Macros that directly list AS18413 as a member:

AS-GTBC-TW(1 members)
AS-TTN(6 members)
AS-DFT-TRANSIT(20 members)
AS-SPARQ(47 members)
AS-EBIX-TRANSIT(70 members)
AS-CHIEF-TRANSIT(209 members)
AS-SEEDNET(240 members)
AS-HINET(364 members)
AS-IIJ(1639 members)
AS-TWIG(2292 members)
AS-ANC-CUSTOMER-PROXY-REGISTER(2405 members)
AS3491:AS-CUSTOMERS-AP(3895 members)
AS-REACH-CUSTOMERS(8210 members)
AS-TELSTRA-INTL-CUSTOMERS(11248 members)
AS-RETN-ACTUAL-V4(12045 members)

Expanded Membership

All macros containing AS18413 (directly or via nested macros): 332

Show 100 macros

AS-GTBC-TW(1 ASNs)
AS-TTN(6 ASNs)
AS-DFT-TRANSIT(20 ASNs)
AS140096:AS-STUIX(37 ASNs)
AS-SPARQ(47 ASNs)
AS-EBIX-TRANSIT(73 ASNs)
AS-EBT(79 ASNs)
AS-TFN-TRANSIT1(103 ASNs)
AS-SEEDNET(279 ASNs)
AS-HINET(364 ASNs)
AS-ANC-CUSTOMER-PROXY-REGISTER(2,405 ASNs)
AS-CTGNET-CUT(2,544 ASNs)
AS-TWIG(2,914 ASNs)
AS-IIJ(3,162 ASNs)
AS-PACNET(4,289 ASNs)
AS-ANC(4,335 ASNs)
AS-SGGS(5,288 ASNs)
AS-FALCORE-AU(5,305 ASNs)
AS-FALCORE-AU-CUST(5,305 ASNs)
AS-CHIEF-TRANSIT(6,746 ASNs)
AS-REACH-CUSTOMERS(8,210 ASNs)
AS-RETN-ACTUAL-V4(12,045 ASNs)
AS-TELSTRA-INTL-CUSTOMERS(12,472 ASNs)
AS213973:AS-BCIX(13,844 ASNs)
AS213973:AS-PARTNERS(13,844 ASNs)
AS57328:AS-DDIX(13,844 ASNs)
AS59552:AS-SON-IX-RS(13,844 ASNs)
AS58453:AS-ASIAASCUST(15,313 ASNs)
AS58453:AS-CMI-ALL(18,020 ASNs)
AS-CMI-ALL(18,021 ASNs)
AS-SEABONECUSTAS(19,767 ASNs)
AS-XO(23,361 ASNs)
AS-VSNL-IN(23,661 ASNs)
AS-FLAGP(25,034 ASNs)
AS-FLAGT(25,034 ASNs)
AS3491:AS-CUSTOMERS-NA(25,092 ASNs)
AS-FIXO-V6(25,776 ASNs)
AS-MFNX(26,187 ASNs)
AS-RETN-HK(26,343 ASNs)
AS47214:AS-LILLIX(26,738 ASNs)
AS43100:AS-MEMBERS(26,826 ASNs)
AS-SFINX-RS-MEMBERS-IPV6(26,914 ASNs)
AS-SFINX-RS-MEMBERS(26,976 ASNs)
AS-PITER-IX-FRA(27,939 ASNs)
AS-SET-STHIX-RS(28,136 ASNs)
AS-FIXO(29,811 ASNs)
AS209861:AS-PEERS(29,811 ASNs)
AS-DECIX-LIS-V6(32,541 ASNs)
AS43729:AS-DECIX-LIS-V6(32,541 ASNs)
AS-DECIX-LIS(34,749 ASNs)
AS43729:AS-DECIX-LIS(34,749 ASNs)
AS48193:AS-PITER-IX-FRA(36,250 ASNs)
AS-TTK(36,818 ASNs)
AS702:AS-SE-CUSTOMER(37,142 ASNs)
AS-TORIX(37,868 ASNs)
AS-LSC-IXP-RS(38,302 ASNs)
AS-LSC-IXP(38,312 ASNs)
AS5413:AS-ROUTE-SERVER-DE-CIX(39,681 ASNs)
AS-LUCIX-RS(40,498 ASNs)
AS-STUIX(41,458 ASNs)
AS-SONIX(41,963 ASNs)
AS-IPTT(42,188 ASNs)
AS-PITER-IX(42,188 ASNs)
AS-PITERIX(42,189 ASNs)
AS-PITER-IX-MSK(42,291 ASNs)
AS49869:AS-PITER-IX-MSK(42,438 ASNs)
AS201376:AS-PEERS(42,984 ASNs)
AS702:AS-CUSTOMER(43,022 ASNs)
AS-RETN6(44,950 ASNs)
AS-ECIX-BER(45,114 ASNs)
AS-TELIANETRU-V6(45,288 ASNs)
AS1299:AS-TWELVE99-RU-V6(45,288 ASNs)
AS-ECIX-HAM(46,249 ASNs)
AS-INTELSATUS(46,298 ASNs)
AS7606:AS-NSW-IX(46,591 ASNs)
AS7606:AS-ALL(47,090 ASNs)
AS-RETN(47,667 ASNs)
AS-ECIX-MUC(48,469 ASNs)
AS-ECIX-DUS(48,854 ASNs)
AS2914:AS-US-V6(52,836 ASNs)
AS-ROSTELECOM(53,118 ASNs)
AS-NSKROUTESERVER(53,148 ASNs)
AS2914:AS-US(53,991 ASNs)
AS-NIXSK-RSCLIENTS(55,989 ASNs)
AS47627:AS-NIXSK-RSCLIENTS(56,033 ASNs)
AS-BIX-V6(56,058 ASNs)
AS-TELIANETRU(56,840 ASNs)
AS1299:AS-TWELVE99-RU-V4(56,840 ASNs)
AS-SEABONE-V6(57,112 ASNs)
AS-TOPIX-RS(57,252 ASNs)
AS3491:AS-CUSTOMERS-AP(58,474 ASNs)
AS-CTGNET(58,815 ASNs)
AS-37662(59,003 ASNs)
AS-CN(59,223 ASNs)
AS1273:AS-CWW(59,499 ASNs)
AS-LEVEL3-UAE(60,102 ASNs)
AS-PLIX6(60,222 ASNs)
AS-SET-INEX-RS(60,298 ASNs)
AS-BCIX-RS(61,123 ASNs)
AS16374:AS-BCIX-RS(61,123 ASNs)
... and 232 more

Upstream AS Paths

44 unique paths, avg length 3.4

AS Looking Glass

Upstream paths (matching graph above)

AS49544 → AS3356 → AS9002 → AS4780 → AS9919 → AS18413
AS14537 → AS13786 → AS9002 → AS4780 → AS9919 → AS18413
AS25091 → AS9002 → AS4780 → AS9919 → AS18413
AS52320 → AS9002 → AS4780 → AS9919 → AS18413
AS61573 → AS174 → AS3491 → AS9924 → AS18413
AS140627 → AS1299 → AS3491 → AS9924 → AS18413
AS2497 → AS3491 → AS9924 → AS18413
AS199524 → AS3356 → AS3491 → AS9924 → AS18413
AS49544 → AS3491 → AS9924 → AS18413
AS1299 → AS9002 → AS18046 → AS18413
AS2500 → AS9002 → AS18046 → AS18413
AS49544 → AS3356 → AS9002 → AS18046 → AS18413
AS150000 → AS18187 → AS6939 → AS9002 → AS18046 → AS18413
AS14537 → AS13786 → AS9002 → AS18046 → AS18413
AS25091 → AS9002 → AS18046 → AS18413
AS37100 → AS9002 → AS18046 → AS18413
AS38001 → AS9002 → AS18046 → AS18413
AS49544 → AS9002 → AS18046 → AS18413
AS52320 → AS9002 → AS18046 → AS18413
AS199524 → AS137409 → AS9002 → AS18046 → AS18413

All 44 Upstream Paths

Complete list of all observed paths

AS2497 → AS4780 → AS9919 → AS18413
AS6939 → AS4780 → AS9919 → AS18413
AS1351 → AS6939 → AS4780 → AS9919 → AS18413
AS2734 → AS6939 → AS4780 → AS9919 → AS18413
AS11399 → AS6939 → AS4780 → AS9919 → AS18413
AS32709 → AS6939 → AS4780 → AS9919 → AS18413
AS148968 → AS6939 → AS4780 → AS9919 → AS18413
AS49544 → AS3356 → AS9002 → AS4780 → AS9919 → AS18413
AS14537 → AS13786 → AS9002 → AS4780 → AS9919 → AS18413
AS25091 → AS9002 → AS4780 → AS9919 → AS18413
AS52320 → AS9002 → AS4780 → AS9919 → AS18413
AS142271 → AS9304 → AS4780 → AS9919 → AS18413
AS137409 → AS4780 → AS9919 → AS18413
AS63927 → AS137409 → AS4780 → AS9919 → AS18413
AS3491 → AS9924 → AS18413
AS61573 → AS174 → AS3491 → AS9924 → AS18413
AS262427 → AS174 → AS3491 → AS9924 → AS18413
AS293 → AS3491 → AS9924 → AS18413
AS140627 → AS1299 → AS3491 → AS9924 → AS18413
AS2497 → AS3491 → AS9924 → AS18413
AS199524 → AS3356 → AS3491 → AS9924 → AS18413
AS8298 → AS8283 → AS3491 → AS9924 → AS18413
AS32590 → AS12956 → AS3491 → AS9924 → AS18413
AS49544 → AS3491 → AS9924 → AS18413
AS6939 → AS9924 → AS18413
AS2734 → AS6939 → AS9924 → AS18413
AS148968 → AS6939 → AS9924 → AS18413
AS142271 → AS9304 → AS9924 → AS18413
AS24482 → AS9924 → AS18413
AS137409 → AS9924 → AS18413
AS9002 → AS18046 → AS18413
AS1299 → AS9002 → AS18046 → AS18413
AS2500 → AS9002 → AS18046 → AS18413
AS49544 → AS3356 → AS9002 → AS18046 → AS18413
AS6939 → AS9002 → AS18046 → AS18413
AS150000 → AS18187 → AS6939 → AS9002 → AS18046 → AS18413
AS14537 → AS13786 → AS9002 → AS18046 → AS18413
AS25091 → AS9002 → AS18046 → AS18413
AS37100 → AS9002 → AS18046 → AS18413
AS38001 → AS9002 → AS18046 → AS18413
AS49544 → AS9002 → AS18046 → AS18413
AS52320 → AS9002 → AS18046 → AS18413
AS137409 → AS9002 → AS18046 → AS18413
AS199524 → AS137409 → AS9002 → AS18046 → AS18413

AS18413 IPv4 Address Subnets (8)

61.65.192.0/20	🇹🇼 TW	Customer Route	GBTC-TW
61.67.0.0/20	🇹🇼 TW	Taiwan Telecommunication Network Services Co. Ltd.…	GBTC-TW
61.67.0.0/22	🇹🇼 TW	Registered for Route	GBTC-TW
61.67.12.0/22	🇹🇼 TW	Registered for Route	GBTC-TW
61.67.4.0/22	🇹🇼 TW	Registered for Route	GBTC-TW
61.67.8.0/22	🇹🇼 TW	Registered for Route	GBTC-TW
61.67.4.0/24	🇹🇼 TW	Proxy-registered route object	GBTC-TW
61.67.9.0/24	🇹🇼 TW	Proxy-registered route object	GBTC-TW