IPv4 R&E Routing Table Report 23:00 GMT Thu 22 Jan, 2026 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1026157 Prefixes after maximum aggregation (per Origin AS): 395234 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 507692 Number of IPv4 prefixes with a valid ROA: 613219 Number of IPv4 prefixes with an invalid ROA: 580 Number of IPv4 prefixes with no ROA: 412358 Total ASes present in the Internet Routing Table: 77729 Prefixes per ASN: 13.20 Origin-only ASes present in the Internet Routing Table: 66618 Origin ASes announcing only one prefix: 27172 Transit ASes present in the Internet Routing Table: 11111 Transit-only ASes present in the Internet Routing Table: 561 Paths with bogon ASNs present in the IPv4 Routing Table: 42 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1016 Number of instances of unregistered ASNs: 1045 Number of 32-bit ASNs allocated by the RIRs: 48453 Number of 32-bit ASNs visible in the Routing Table: 39663 Prefixes from 32-bit ASNs in the Routing Table: 221145 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 471 Number of addresses announced to Internet: 3106611968 Equivalent to 185 /8s, 43 /16s and 35 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 334502 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 280333 Total APNIC prefixes after maximum aggregation: 81828 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 266560 Unique aggregates announced from the APNIC address blocks: 106939 APNIC Region origin ASes present in the Internet Routing Table: 14976 APNIC Prefixes per ASN: 17.80 APNIC Region origin ASes announcing only one prefix: 4556 APNIC Region transit ASes present in the Internet Routing Table: 2003 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10559 Number of APNIC addresses announced to Internet: 753654272 Equivalent to 44 /8s, 235 /16s and 218 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 299830 Total ARIN prefixes after maximum aggregation: 135046 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299742 Unique aggregates announced from the ARIN address blocks: 146164 ARIN Region origin ASes present in the Internet Routing Table: 19365 ARIN Prefixes per ASN: 15.48 ARIN Region origin ASes announcing only one prefix: 7077 ARIN Region transit ASes present in the Internet Routing Table: 1923 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5446 Number of ARIN addresses announced to Internet: 1344930816 Equivalent to 80 /8s, 42 /16s and 4 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 282538 Total RIPE prefixes after maximum aggregation: 139981 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284414 Unique aggregates announced from the RIPE address blocks: 184864 RIPE Region origin ASes present in the Internet Routing Table: 29134 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12118 RIPE Region transit ASes present in the Internet Routing Table: 4055 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 209 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12929 Number of RIPE addresses announced to Internet: 733820928 Equivalent to 43 /8s, 189 /16s and 56 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 125892 Total LACNIC prefixes after maximum aggregation: 30766 LACNIC Deaggregation factor: 4.09 Prefixes being announced from the LACNIC address blocks: 121711 Unique aggregates announced from the LACNIC address blocks: 49735 LACNIC Region origin ASes present in the Internet Routing Table: 11351 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2676 LACNIC Region transit ASes present in the Internet Routing Table: 2546 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9350 Number of LACNIC addresses announced to Internet: 170567680 Equivalent to 10 /8s, 42 /16s and 168 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 36548 Total AfriNIC prefixes after maximum aggregation: 6928 AfriNIC Deaggregation factor: 5.28 Prefixes being announced from the AfriNIC address blocks: 53259 Unique aggregates announced from the AfriNIC address blocks: 19590 AfriNIC Region origin ASes present in the Internet Routing Table: 2015 AfriNIC Prefixes per ASN: 26.43 AfriNIC Region origin ASes announcing only one prefix: 745 AfriNIC Region transit ASes present in the Internet Routing Table: 384 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1379 Number of AfriNIC addresses announced to Internet: 103352576 Equivalent to 6 /8s, 41 /16s and 9 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13523 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6024 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4694 543 342 BBIL-AP BHARTI Airtel Ltd., IN 18403 4464 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4055 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3423 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3329 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3145 197 610 LCS-AS-AP LARUS Limited, HK 24560 2958 864 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14007 38738 5444 AMAZON-02 - Amazon.com, Inc., US 22773 4778 3099 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4638 308 1020 CABLEONE - CABLE ONE, INC., US 7155 3858 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3698 1321 70 SHAW - Shaw Communications, CA 396982 3331 4868 501 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3144 8768 844 COGENT-174 - Cogent Communications, LLC, 749 3143 54729 2394 DNIC-AS-00749 - United States Department 16625 2820 1209 2122 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2703 222 889 AS-COLOCROSSING - HostPapa, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7235 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3910 365 2236 M247, RO 20940 3830 3393 111 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2564 182 1861 CDNEXT, GB 34984 2392 358 589 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1610 242 782 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12731 3308 603 UNINET, MX 10620 3446 457 1108 Telmex Colombia S.A., CO 13999 2483 508 351 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1258 371 22 INTEGRATEL PERU S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 2486 56 TIM SA, BR 18881 909 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1983 646 33 RAYA-AS, EG 36992 1842 1532 339 ETISALAT-MISR, EG 24863 1283 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1144 522 45 Vodafone-, EG 37069 1117 1112 11 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 567 82 3 KENET-AS, KE 328608 562 48 173 Africa-on-Cloud-AS, ZA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14007 38738 5444 AMAZON-02 - Amazon.com, Inc., US 9808 13523 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12731 3308 603 UNINET, MX 12479 7235 1711 149 UNI2-AS, ES 7545 6024 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4778 3099 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 9498 4694 543 342 BBIL-AP BHARTI Airtel Ltd., IN 11492 4638 308 1020 CABLEONE - CABLE ONE, INC., US 18403 4464 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13523 13403 CHINAMOBILE-CN China Mobile Communications Grou 8151 12731 12128 UNINET, MX 12479 7235 7086 UNI2-AS, ES 7545 6024 5451 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4464 4440 FPT-AS-AP FPT Telecom Company, VN 22773 4778 4414 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 9498 4694 4352 BBIL-AP BHARTI Airtel Ltd., IN 7552 4055 4026 VIETEL-AS-AP Viettel Group, VN 7155 3858 3773 VIASAT-SP-BACKBONE - ViaSat,Inc., US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 204464 UNALLOCATED 5.175.223.0/24 211066 RYZEHOSTING-TRADING, AT 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 5.182.62.0/24 Origin: 214476 CANUS, CH 5.182.62.0/24 Transit: 13030 INIT7, CH 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:40 /11:93 /12:302 /13:578 /14:1197 /15:2087 /16:13670 /17:8187 /18:13469 /19:24745 /20:44732 /21:52063 /22:113187 /23:105979 /24:645798 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6892 12731 UNINET, MX 12479 6165 7235 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3498 4638 CABLEONE - CABLE ONE, INC., US 6327 3479 3698 SHAW - Shaw Communications, CA 22773 3049 4778 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2817 3858 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2480 14007 AMAZON-02 - Amazon.com, Inc., US 30036 2305 2647 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2226 3446 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2505 2:1517 3:965 4:9 5:5003 6:186 7:6 8:1491 9:14 11:172 12:1227 13:620 14:2639 15:415 16:179 17:391 18:917 20:596 21:4 22:188 23:8124 24:2630 25:2 27:2816 29:19 31:3436 32:31 34:84 35:289 36:4645 37:4521 38:9880 39:1254 40:439 41:4536 42:1988 43:2984 44:414 45:19743 46:4936 47:400 48:20 49:2194 50:2062 51:598 52:1259 54:238 55:1127 56:11 57:309 58:2342 59:1355 60:1172 61:3136 62:3101 63:1766 64:6194 65:2129 66:5997 67:3255 68:1483 69:4203 70:1031 71:617 72:3091 74:2952 75:1512 76:605 77:2754 78:1919 79:1803 80:2302 81:2105 82:4031 83:1470 84:2019 85:3679 86:1104 87:2240 88:1341 89:4652 90:821 91:8400 92:2849 93:3013 94:4285 95:4513 96:1448 97:312 98:954 99:782 100:69 101:1580 102:4360 103:32929 104:5454 105:793 106:916 107:2823 108:1221 109:4239 110:2311 111:4051 112:3113 113:1980 114:2168 115:2266 116:2183 117:3305 118:2991 119:2116 120:2590 121:1516 122:2952 123:2294 124:1654 125:2982 126:125 128:1582 129:939 130:1543 131:2283 132:766 133:461 134:1614 135:536 136:1627 137:1277 138:2986 139:1613 140:1761 141:1562 142:2464 143:2160 144:1563 145:626 146:2193 147:2269 148:2805 149:2926 150:1330 151:2625 152:2270 153:850 154:9641 155:2302 156:4591 157:2255 158:1497 159:2752 160:3654 161:2000 162:4021 163:2331 164:1970 165:2649 166:1301 167:2208 168:3929 169:861 170:5460 171:1118 172:4567 173:3422 174:891 175:1357 176:3772 177:4716 178:4315 179:2288 180:3138 181:4401 182:3894 183:2754 184:2019 185:21664 186:5537 187:4854 188:4629 189:4501 190:9665 191:1521 192:11428 193:9499 194:7840 195:5677 196:3266 197:3284 198:6056 199:6114 200:8031 201:6393 202:10588 203:10610 204:4710 205:3695 206:4346 207:3812 208:4363 209:5400 210:4729 211:2685 212:4962 213:4047 214:1067 215:54 216:7136 217:3445 218:1620 219:421 220:2192 221:1309 222:906 223:3286 End of report