IPv4 R&E Routing Table Report 23:05 GMT Mon 15 Dec, 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: 1017849 Prefixes after maximum aggregation (per Origin AS): 393422 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504625 Number of IPv4 prefixes with a valid ROA: 604039 Number of IPv4 prefixes with an invalid ROA: 607 Number of IPv4 prefixes with no ROA: 413203 Total ASes present in the Internet Routing Table: 77551 Prefixes per ASN: 13.12 Origin-only ASes present in the Internet Routing Table: 66460 Origin ASes announcing only one prefix: 27108 Transit ASes present in the Internet Routing Table: 11091 Transit-only ASes present in the Internet Routing Table: 557 Paths with bogon ASNs present in the IPv4 Routing Table: 18 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: 995 Number of instances of unregistered ASNs: 1024 Number of 32-bit ASNs allocated by the RIRs: 48216 Number of 32-bit ASNs visible in the Routing Table: 39448 Prefixes from 32-bit ASNs in the Routing Table: 219047 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 727 Number of addresses announced to Internet: 3104505344 Equivalent to 185 /8s, 10 /16s and 254 /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: 332277 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275724 Total APNIC prefixes after maximum aggregation: 80620 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 262812 Unique aggregates announced from the APNIC address blocks: 106167 APNIC Region origin ASes present in the Internet Routing Table: 14884 APNIC Prefixes per ASN: 17.66 APNIC Region origin ASes announcing only one prefix: 4532 APNIC Region transit ASes present in the Internet Routing Table: 2001 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: 10474 Number of APNIC addresses announced to Internet: 752977664 Equivalent to 44 /8s, 225 /16s and 135 /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: 297754 Total ARIN prefixes after maximum aggregation: 134515 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298139 Unique aggregates announced from the ARIN address blocks: 145805 ARIN Region origin ASes present in the Internet Routing Table: 19359 ARIN Prefixes per ASN: 15.40 ARIN Region origin ASes announcing only one prefix: 7086 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: 5426 Number of ARIN addresses announced to Internet: 1342369024 Equivalent to 80 /8s, 2 /16s and 237 /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: 281998 Total RIPE prefixes after maximum aggregation: 139868 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282714 Unique aggregates announced from the RIPE address blocks: 183585 RIPE Region origin ASes present in the Internet Routing Table: 29105 RIPE Prefixes per ASN: 9.71 RIPE Region origin ASes announcing only one prefix: 12087 RIPE Region transit ASes present in the Internet Routing Table: 4052 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12858 Number of RIPE addresses announced to Internet: 735005440 Equivalent to 43 /8s, 207 /16s and 75 /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: 125561 Total LACNIC prefixes after maximum aggregation: 30807 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121387 Unique aggregates announced from the LACNIC address blocks: 49730 LACNIC Region origin ASes present in the Internet Routing Table: 11326 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2671 LACNIC Region transit ASes present in the Internet Routing Table: 2545 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: 9329 Number of LACNIC addresses announced to Internet: 170582528 Equivalent to 10 /8s, 42 /16s and 226 /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: 35817 Total AfriNIC prefixes after maximum aggregation: 6943 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 52070 Unique aggregates announced from the AfriNIC address blocks: 18746 AfriNIC Region origin ASes present in the Internet Routing Table: 1995 AfriNIC Prefixes per ASN: 26.10 AfriNIC Region origin ASes announcing only one prefix: 732 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1361 Number of AfriNIC addresses announced to Internet: 103210496 Equivalent to 6 /8s, 38 /16s and 222 /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 13282 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4609 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4518 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3362 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3322 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2519 158 567 LCS-AS-AP LARUS Limited, HK 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 13995 38434 5401 AMAZON-02, US 22773 4776 3100 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4686 311 946 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3318 4863 492 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2854 1222 2141 AKAMAI-AS, US 36352 2816 229 904 AS-COLOCROSSING, US 174 2707 8770 868 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 7299 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3938 368 2254 M247, RO 20940 3851 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2548 181 1850 CDNEXT, GB 34984 2419 363 573 TELLCOM-AS, TR 8452 1687 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 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 12674 3287 588 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2514 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1377 2434 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 357 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1023 2486 56 TIM SA, BR 18881 907 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 1926 368 14 RAYA-AS, EG 36992 1685 1509 399 ETISALAT-MISR, EG 24863 1263 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1084 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1048 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 564 82 3 KENET-AS, KE 15399 534 55 50 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 13995 38434 5401 AMAZON-02, US 9808 13282 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12674 3287 588 UNINET, MX 12479 7299 1711 149 UNI2-AS, ES 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4776 3100 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4686 311 946 CABLEONE, US 9498 4609 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4518 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 13282 13164 CHINAMOBILE-CN China Mobile Communications Grou 8151 12674 12086 UNINET, MX 12479 7299 7150 UNI2-AS, ES 7545 6039 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4518 4494 FPT-AS-AP FPT Telecom Company, VN 22773 4776 4408 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4609 4270 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, 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 23.137.48.0/24 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 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 /12:299 /13:578 /14:1197 /15:2093 /16:13643 /17:8151 /18:13420 /19:24660 /20:44630 /21:51921 /22:112675 /23:105100 /24:639318 /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 6875 12674 UNINET, MX 12479 6229 7299 UNI2-AS, ES 11492 3531 4686 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3045 4776 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2418 13995 AMAZON-02, US 30036 2323 2666 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2445 2:1537 3:966 4:10 5:4951 6:187 7:6 8:1501 9:6 11:172 12:1229 13:563 14:2611 15:415 16:290 17:387 18:910 20:587 21:4 22:188 23:8062 24:2557 25:2 27:2800 29:19 31:3386 32:31 33:1 34:84 35:286 36:4608 37:4524 38:9976 39:1196 40:437 41:4446 42:2045 43:2888 44:413 45:19601 46:5078 47:394 49:2157 50:2051 51:593 52:1423 54:225 55:1102 56:11 57:301 58:2320 59:1345 60:1171 61:3086 62:3098 63:1739 64:5980 65:2115 66:5880 67:3232 68:1491 69:4178 70:1028 71:618 72:3070 74:2920 75:1516 76:597 77:2751 78:1926 79:1793 80:2303 81:2080 82:3859 83:1470 84:2008 85:3644 86:1105 87:2177 88:1344 89:4601 90:836 91:8408 92:2830 93:3010 94:4209 95:4558 96:1426 97:311 98:950 99:780 100:68 101:1344 102:4302 103:32623 104:5485 105:760 106:917 107:2806 108:1206 109:4251 110:2310 111:3936 112:2804 113:1936 114:2099 115:2262 116:2177 117:3131 118:2997 119:2085 120:2390 121:1497 122:2946 123:2276 124:1650 125:2935 126:125 128:1580 129:948 130:1528 131:2232 132:763 133:462 134:1628 135:538 136:1499 137:1222 138:2991 139:1593 140:1767 141:1555 142:2424 143:2113 144:1343 145:629 146:2181 147:2138 148:2793 149:2933 150:1322 151:2600 152:2244 153:790 154:9293 155:2273 156:4317 157:2234 158:1475 159:2717 160:3659 161:1985 162:3996 163:2327 164:1978 165:2625 166:1302 167:2173 168:3907 169:806 170:5429 171:1115 172:4524 173:3425 174:903 175:1343 176:3764 177:4745 178:4266 179:2292 180:2966 181:4324 182:3843 183:2652 184:2027 185:21611 186:5508 187:4759 188:4461 189:4490 190:9676 191:1519 192:11415 193:9499 194:7853 195:5612 196:3285 197:3187 198:6061 199:6102 200:8052 201:6395 202:10513 203:10492 204:4620 205:3680 206:4362 207:3791 208:4292 209:5462 210:4727 211:2681 212:4894 213:4018 214:1065 215:54 216:7077 217:3381 218:1600 219:406 220:2194 221:1285 222:775 223:3220 End of report