IPv4 R&E Routing Table Report 23:05 GMT Sat 29 Nov, 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: 1015433 Prefixes after maximum aggregation (per Origin AS): 393298 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 503687 Number of IPv4 prefixes with a valid ROA: 592338 Number of IPv4 prefixes with an invalid ROA: 774 Number of IPv4 prefixes with no ROA: 422321 Total ASes present in the Internet Routing Table: 77506 Prefixes per ASN: 13.10 Origin-only ASes present in the Internet Routing Table: 66424 Origin ASes announcing only one prefix: 27102 Transit ASes present in the Internet Routing Table: 11082 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 19 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1002 Number of instances of unregistered ASNs: 1031 Number of 32-bit ASNs allocated by the RIRs: 48096 Number of 32-bit ASNs visible in the Routing Table: 39355 Prefixes from 32-bit ASNs in the Routing Table: 217401 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 464 Number of addresses announced to Internet: 3099910144 Equivalent to 184 /8s, 196 /16s and 224 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 332425 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274476 Total APNIC prefixes after maximum aggregation: 80915 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 262215 Unique aggregates announced from the APNIC address blocks: 106168 APNIC Region origin ASes present in the Internet Routing Table: 14851 APNIC Prefixes per ASN: 17.66 APNIC Region origin ASes announcing only one prefix: 4500 APNIC Region transit ASes present in the Internet Routing Table: 1997 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10430 Number of APNIC addresses announced to Internet: 753121024 Equivalent to 44 /8s, 227 /16s and 183 /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: 297161 Total ARIN prefixes after maximum aggregation: 134124 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296954 Unique aggregates announced from the ARIN address blocks: 145558 ARIN Region origin ASes present in the Internet Routing Table: 19353 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7114 ARIN Region transit ASes present in the Internet Routing Table: 1928 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: 5416 Number of ARIN addresses announced to Internet: 1337378816 Equivalent to 79 /8s, 182 /16s and 200 /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: 281796 Total RIPE prefixes after maximum aggregation: 139918 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 282589 Unique aggregates announced from the RIPE address blocks: 183607 RIPE Region origin ASes present in the Internet Routing Table: 29130 RIPE Prefixes per ASN: 9.70 RIPE Region origin ASes announcing only one prefix: 12099 RIPE Region transit ASes present in the Internet Routing Table: 4042 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12847 Number of RIPE addresses announced to Internet: 735238400 Equivalent to 43 /8s, 210 /16s and 217 /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: 125440 Total LACNIC prefixes after maximum aggregation: 30788 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121428 Unique aggregates announced from the LACNIC address blocks: 49639 LACNIC Region origin ASes present in the Internet Routing Table: 11310 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2660 LACNIC Region transit ASes present in the Internet Routing Table: 2548 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9309 Number of LACNIC addresses announced to Internet: 170715392 Equivalent to 10 /8s, 44 /16s and 233 /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: 35558 Total AfriNIC prefixes after maximum aggregation: 6889 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 51783 Unique aggregates announced from the AfriNIC address blocks: 18333 AfriNIC Region origin ASes present in the Internet Routing Table: 1991 AfriNIC Prefixes per ASN: 26.01 AfriNIC Region origin ASes announcing only one prefix: 729 AfriNIC Region transit ASes present in the Internet Routing Table: 377 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1353 Number of AfriNIC addresses announced to Internet: 103222784 Equivalent to 6 /8s, 39 /16s and 14 /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 13506 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6066 832 592 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4581 541 335 BBIL-AP BHARTI Airtel Ltd., IN 18403 4434 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4009 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3334 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3318 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2946 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2493 273 1925 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14226 37206 5386 AMAZON-02, US 22773 4774 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3305 4861 483 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2873 1229 2147 AKAMAI-AS, US 36352 2828 231 909 AS-COLOCROSSING, US 174 2691 8766 841 COGENT-174, 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 7297 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4024 380 2290 M247, RO 20940 3864 3394 124 AKAMAI-ASN1, NL 12389 3145 2317 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2536 180 1836 CDNEXT, GB 34984 2419 363 576 TELLCOM-AS, TR 8452 1699 1852 14 TE-AS TE-AS, EG 203020 1610 241 781 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 12664 3301 572 UNINET, MX 10620 3453 463 1107 Telmex Colombia S.A., CO 13999 2509 509 348 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1348 783 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1055 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 918 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 1985 630 32 RAYA-AS, EG 36992 1681 1508 399 ETISALAT-MISR, EG 24863 1264 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1086 520 31 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 561 82 3 KENET-AS, KE 37342 536 32 1 MOVITEL, MZ 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 14226 37206 5386 AMAZON-02, US 9808 13506 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12664 3301 572 UNINET, MX 12479 7297 1711 149 UNI2-AS, ES 7545 6066 832 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4774 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4581 541 335 BBIL-AP BHARTI Airtel Ltd., IN 18403 4434 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 13506 13389 CHINAMOBILE-CN China Mobile Communications Grou 8151 12664 12092 UNINET, MX 12479 7297 7148 UNI2-AS, ES 7545 6066 5474 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4434 4410 FPT-AS-AP FPT Telecom Company, VN 22773 4774 4407 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4581 4246 BBIL-AP BHARTI Airtel Ltd., IN 7552 4009 3981 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, 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 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, 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 /11:94 /12:298 /13:577 /14:1196 /15:2089 /16:13645 /17:8160 /18:13420 /19:24657 /20:44453 /21:51909 /22:112848 /23:104877 /24:637139 /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 6848 12664 UNINET, MX 12479 6234 7297 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3047 4774 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2433 14226 AMAZON-02, US 30036 2309 2652 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2208 3453 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) ---------------------------------------------- 1:2441 2:1538 3:971 4:10 5:4963 6:190 7:6 8:1501 9:6 11:172 12:1232 13:570 14:2607 15:413 16:303 17:388 18:912 20:586 21:4 22:188 23:8075 24:2555 25:2 27:2784 29:19 31:3396 32:31 33:1 34:84 35:284 36:4594 37:4497 38:9342 39:1188 40:457 41:4451 42:1982 43:2878 44:400 45:19533 46:5090 47:377 49:2152 50:2047 51:597 52:1567 54:288 55:1102 56:11 57:300 58:2322 59:1325 60:1185 61:3082 62:3093 63:1740 64:5962 65:2130 66:5912 67:3234 68:1496 69:4176 70:1030 71:618 72:3023 74:2928 75:1514 76:599 77:2767 78:1918 79:1778 80:2294 81:2091 82:3822 83:1463 84:2022 85:3638 86:1102 87:2144 88:1339 89:4603 90:842 91:8424 92:2838 93:3007 94:4227 95:4561 96:1447 97:311 98:958 99:775 100:67 101:1342 102:4253 103:32663 104:5507 105:777 106:904 107:2806 108:1195 109:4244 110:2302 111:3897 112:2779 113:1913 114:2097 115:2247 116:2159 117:3128 118:3033 119:2074 120:2376 121:1502 122:2945 123:2275 124:1669 125:2924 126:125 128:1579 129:960 130:1498 131:2238 132:768 133:462 134:1608 135:395 136:1498 137:1136 138:2875 139:1593 140:1725 141:1546 142:2318 143:2126 144:1335 145:634 146:2178 147:2162 148:2789 149:2877 150:1315 151:2641 152:2276 153:623 154:9203 155:2249 156:4105 157:2209 158:1450 159:2672 160:3678 161:1990 162:3992 163:2323 164:1963 165:2593 166:1309 167:2136 168:3879 169:785 170:5450 171:1115 172:4474 173:3406 174:906 175:1354 176:3764 177:4703 178:4307 179:2280 180:2957 181:4311 182:3838 183:2595 184:2052 185:21693 186:5491 187:4781 188:4440 189:4493 190:9704 191:1551 192:11415 193:9475 194:7861 195:5607 196:3252 197:3300 198:6062 199:6091 200:8082 201:6382 202:10436 203:10494 204:4609 205:3667 206:4365 207:3746 208:4241 209:5398 210:4716 211:2675 212:4900 213:4005 214:1042 215:52 216:7113 217:3352 218:1585 219:410 220:2200 221:1280 222:766 223:3176 End of report