IPv4 R&E Routing Table Report 23:05 GMT Thu 16 Oct, 2025 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: 1008359 Prefixes after maximum aggregation (per Origin AS): 391268 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 497818 Number of IPv4 prefixes with a valid ROA: 579954 Number of IPv4 prefixes with an invalid ROA: 698 Number of IPv4 prefixes with no ROA: 427707 Total ASes present in the Internet Routing Table: 77338 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66276 Origin ASes announcing only one prefix: 27066 Transit ASes present in the Internet Routing Table: 11062 Transit-only ASes present in the Internet Routing Table: 555 Paths with bogon ASNs present in the IPv4 Routing Table: 66 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 89 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1050 Number of instances of unregistered ASNs: 1116 Number of 32-bit ASNs allocated by the RIRs: 47721 Number of 32-bit ASNs visible in the Routing Table: 39113 Prefixes from 32-bit ASNs in the Routing Table: 213794 Number of bogon 32-bit ASNs visible in the Routing Table: 152 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 441 Number of addresses announced to Internet: 3111531520 Equivalent to 185 /8s, 118 /16s and 52 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 328833 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270590 Total APNIC prefixes after maximum aggregation: 80011 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 260216 Unique aggregates announced from the APNIC address blocks: 105844 APNIC Region origin ASes present in the Internet Routing Table: 14797 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4478 APNIC Region transit ASes present in the Internet Routing Table: 1986 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10376 Number of APNIC addresses announced to Internet: 751594752 Equivalent to 44 /8s, 204 /16s and 109 /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: 297165 Total ARIN prefixes after maximum aggregation: 134383 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298280 Unique aggregates announced from the ARIN address blocks: 144393 ARIN Region origin ASes present in the Internet Routing Table: 19304 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7091 ARIN Region transit ASes present in the Internet Routing Table: 1924 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: 5363 Number of ARIN addresses announced to Internet: 1352759040 Equivalent to 80 /8s, 161 /16s and 119 /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: 279762 Total RIPE prefixes after maximum aggregation: 138895 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 279759 Unique aggregates announced from the RIPE address blocks: 181241 RIPE Region origin ASes present in the Internet Routing Table: 29075 RIPE Prefixes per ASN: 9.62 RIPE Region origin ASes announcing only one prefix: 12112 RIPE Region transit ASes present in the Internet Routing Table: 4039 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12763 Number of RIPE addresses announced to Internet: 732744704 Equivalent to 43 /8s, 172 /16s and 204 /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: 124780 Total LACNIC prefixes after maximum aggregation: 30425 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 120864 Unique aggregates announced from the LACNIC address blocks: 49420 LACNIC Region origin ASes present in the Internet Routing Table: 11303 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2668 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9275 Number of LACNIC addresses announced to Internet: 170567936 Equivalent to 10 /8s, 42 /16s and 169 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35012 Total AfriNIC prefixes after maximum aggregation: 6857 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 48799 Unique aggregates announced from the AfriNIC address blocks: 16532 AfriNIC Region origin ASes present in the Internet Routing Table: 1971 AfriNIC Prefixes per ASN: 24.76 AfriNIC Region origin ASes announcing only one prefix: 717 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 89 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1336 Number of AfriNIC addresses announced to Internet: 103677440 Equivalent to 6 /8s, 45 /16s and 254 /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 13842 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6180 834 599 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4394 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3976 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3686 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3167 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2932 863 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2529 518 1632 HUTCHISON-AS-AP HGC Global Communications 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 14365 41088 5393 AMAZON-02, US 11492 4770 322 786 CABLEONE, US 22773 4258 3067 363 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3683 1320 82 SHAW, CA 396982 3273 4825 466 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3121 242 1745 USDA-1, US 174 3003 8762 840 COGENT-174, US 16625 2903 1238 2170 AKAMAI-AS, 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 7377 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3982 374 2248 M247, RO 20940 3915 3395 124 AKAMAI-ASN1, NL 12389 3138 2313 866 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2529 180 1840 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1717 205 1004 HOSTROYALE, IN 8452 1646 1852 14 TE-AS TE-AS, EG 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 12374 3259 588 UNINET, MX 10620 3479 468 1087 Telmex Colombia S.A., CO 13999 2517 511 347 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 28573 1352 2426 293 Claro NXT Telecomunicacoes Ltda, BR 6147 1272 371 23 Telefonica del Peru S.A.A., PE 11664 1224 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1059 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, 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 1767 594 28 RAYA-AS, EG 36992 1512 1498 385 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 36935 1010 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 572 82 3 KENET-AS, KE 15399 551 57 54 WANANCHI-, KE 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 14365 41088 5393 AMAZON-02, US 9808 13842 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12374 3259 588 UNINET, MX 12479 7377 1711 149 UNI2-AS, ES 7545 6180 834 599 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4770 322 786 CABLEONE, US 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4394 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4258 3067 363 ASN-CXA-ALL-CCI-22773-RDC, US 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 13842 13725 CHINAMOBILE-CN China Mobile Communications Grou 8151 12374 11786 UNINET, MX 12479 7377 7228 UNI2-AS, ES 7545 6180 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4394 4369 FPT-AS-AP FPT Telecom Company, VN 9498 4477 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4770 3984 CABLEONE, US 7552 3976 3948 VIETEL-AS-AP Viettel Group, VN 22773 4258 3895 ASN-CXA-ALL-CCI-22773-RDC, 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 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 /10:41 /11:93 /12:300 /13:579 /14:1198 /15:2120 /16:13739 /17:8137 /18:13405 /19:24559 /20:44163 /21:51748 /22:112389 /23:104105 /24:631753 /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 6604 12374 UNINET, MX 12479 6345 7377 UNI2-AS, ES 11492 3583 4770 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3472 3683 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2649 4258 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2411 14365 AMAZON-02, US 30036 2307 2648 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3479 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) ---------------------------------------------- 1:2420 2:1527 3:946 4:10 5:4855 6:170 7:6 8:1523 9:6 11:172 12:1237 13:557 14:2651 15:402 16:303 17:387 18:907 20:577 21:4 22:188 23:8002 24:2560 25:2 27:2790 29:19 31:3334 32:31 33:1 34:84 35:276 36:4486 37:4539 38:9514 39:1107 40:472 41:4267 42:1955 43:2805 44:392 45:19164 46:5167 47:370 49:2090 50:2048 51:595 52:1601 54:356 55:1097 56:11 57:282 58:2313 59:1319 60:1189 61:2957 62:3082 63:1751 64:5790 65:2121 66:5538 67:3140 68:1469 69:4097 70:1043 71:625 72:2992 74:2819 75:1504 76:603 77:2760 78:1898 79:1751 80:2245 81:2089 82:3470 83:1478 84:1985 85:3537 86:1100 87:2128 88:1325 89:4518 90:814 91:8374 92:2810 93:2983 94:4141 95:4503 96:1473 97:311 98:949 99:754 100:71 101:1481 102:4175 103:32862 104:5450 105:778 106:895 107:2794 108:1199 109:4214 110:2258 111:3795 112:2707 113:1860 114:2073 115:2295 116:2105 117:3041 118:3038 119:2020 120:2300 121:1481 122:2804 123:2254 124:1706 125:2908 126:125 128:1562 129:958 130:1401 131:2164 132:788 133:462 134:1619 135:364 136:1491 137:1130 138:2814 139:1585 140:1635 141:1550 142:2156 143:2088 144:1272 145:628 146:2174 147:2133 148:2745 149:2940 150:1297 151:2630 152:2175 153:575 154:7835 155:2178 156:3169 157:2002 158:1438 159:2602 160:3629 161:1994 162:3965 163:2303 164:1945 165:2558 166:1565 167:2112 168:3814 169:777 170:5384 171:1060 172:4476 173:3425 174:906 175:1355 176:3750 177:4702 178:4304 179:2275 180:2879 181:4244 182:3748 183:2555 184:2072 185:21612 186:5348 187:4698 188:4385 189:4393 190:9711 191:1554 192:11368 193:9478 194:7807 195:5586 196:3290 197:3349 198:6077 199:8802 200:8046 201:6364 202:10458 203:10588 204:4594 205:3624 206:4408 207:3714 208:4231 209:5331 210:4687 211:2691 212:4849 213:3901 214:1032 215:52 216:7054 217:3355 218:1577 219:399 220:2197 221:1249 222:751 223:3084 End of report