IPv4 R&E Routing Table Report 23:05 GMT Thu 13 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: 1010192 Prefixes after maximum aggregation (per Origin AS): 391499 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 500976 Number of IPv4 prefixes with a valid ROA: 586517 Number of IPv4 prefixes with an invalid ROA: 634 Number of IPv4 prefixes with no ROA: 423041 Total ASes present in the Internet Routing Table: 77433 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66336 Origin ASes announcing only one prefix: 27076 Transit ASes present in the Internet Routing Table: 11097 Transit-only ASes present in the Internet Routing Table: 543 Paths with bogon ASNs present in the IPv4 Routing Table: 27 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: 967 Number of instances of unregistered ASNs: 996 Number of 32-bit ASNs allocated by the RIRs: 47981 Number of 32-bit ASNs visible in the Routing Table: 39254 Prefixes from 32-bit ASNs in the Routing Table: 215633 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: 414 Number of addresses announced to Internet: 3102600704 Equivalent to 184 /8s, 237 /16s and 238 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 331337 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271094 Total APNIC prefixes after maximum aggregation: 80141 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 261060 Unique aggregates announced from the APNIC address blocks: 106011 APNIC Region origin ASes present in the Internet Routing Table: 14840 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4499 APNIC Region transit ASes present in the Internet Routing Table: 2013 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: 10419 Number of APNIC addresses announced to Internet: 748450560 Equivalent to 44 /8s, 156 /16s and 115 /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: 296502 Total ARIN prefixes after maximum aggregation: 133580 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296425 Unique aggregates announced from the ARIN address blocks: 145238 ARIN Region origin ASes present in the Internet Routing Table: 19352 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7110 ARIN Region transit ASes present in the Internet Routing Table: 1927 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: 5402 Number of ARIN addresses announced to Internet: 1344810752 Equivalent to 80 /8s, 40 /16s and 47 /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: 281026 Total RIPE prefixes after maximum aggregation: 139495 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281434 Unique aggregates announced from the RIPE address blocks: 182470 RIPE Region origin ASes present in the Internet Routing Table: 29089 RIPE Prefixes per ASN: 9.67 RIPE Region origin ASes announcing only one prefix: 12092 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: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12799 Number of RIPE addresses announced to Internet: 735367168 Equivalent to 43 /8s, 212 /16s and 208 /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: 125035 Total LACNIC prefixes after maximum aggregation: 30766 LACNIC Deaggregation factor: 4.06 Prefixes being announced from the LACNIC address blocks: 121105 Unique aggregates announced from the LACNIC address blocks: 49620 LACNIC Region origin ASes present in the Internet Routing Table: 11309 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2659 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: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9292 Number of LACNIC addresses announced to Internet: 170728704 Equivalent to 10 /8s, 45 /16s and 29 /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: 35568 Total AfriNIC prefixes after maximum aggregation: 6855 AfriNIC Deaggregation factor: 5.19 Prefixes being announced from the AfriNIC address blocks: 49754 Unique aggregates announced from the AfriNIC address blocks: 17274 AfriNIC Region origin ASes present in the Internet Routing Table: 1978 AfriNIC Prefixes per ASN: 25.15 AfriNIC Region origin ASes announcing only one prefix: 716 AfriNIC Region transit ASes present in the Internet Routing Table: 377 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: 1342 Number of AfriNIC addresses announced to Internet: 103019776 Equivalent to 6 /8s, 35 /16s and 245 /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 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6089 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4524 538 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4412 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3974 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3718 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3320 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2937 863 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 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 14213 37265 5371 AMAZON-02, US 11492 4785 317 804 CABLEONE, US 22773 4676 3094 383 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3855 284 83 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3288 4827 473 GOOGLE-CLOUD-PLATFORM, US 749 3215 54766 2466 DNIC-AS-00749, US 16625 2891 1235 2158 AKAMAI-AS, US 36352 2849 231 912 AS-COLOCROSSING, US 30036 2658 367 289 MEDIACOM-ENTERPRISE-BUSINESS, 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 7290 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4025 381 2289 M247, RO 20940 3861 3394 124 AKAMAI-ASN1, NL 12389 3144 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2480 175 1783 CDNEXT, GB 34984 2417 363 575 TELLCOM-AS, TR 8452 1685 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1470 167 846 HOSTROYALE, IN 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 12539 3297 576 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2503 511 347 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1275 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1028 2486 56 TIM SA, BR 18881 911 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 1680 1509 397 ETISALAT-MISR, EG 24863 1266 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 Vodafone-, EG 37069 1086 1112 11 MOBINIL, EG 29571 1070 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 82 3 KENET-AS, KE 15399 551 57 56 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 14213 37265 5371 AMAZON-02, US 9808 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12539 3297 576 UNINET, MX 12479 7290 1711 149 UNI2-AS, ES 7545 6089 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4785 317 804 CABLEONE, US 22773 4676 3094 383 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4524 538 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4412 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 13390 13273 CHINAMOBILE-CN China Mobile Communications Grou 8151 12539 11963 UNINET, MX 12479 7290 7141 UNI2-AS, ES 7545 6089 5501 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4412 4388 FPT-AS-AP FPT Telecom Company, VN 22773 4676 4293 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4524 4206 BBIL-AP BHARTI Airtel Ltd., IN 11492 4785 3981 CABLEONE, US 7552 3974 3946 VIETEL-AS-AP Viettel Group, VN 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 3737 AS-PTD, 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 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 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 23.141.0.0/24 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.149.124.0/24 Origin: 40806 GRAPHENEOS, CA 23.149.124.0/24 Transit: 53667 PONYNET, 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 /8:18 /9:14 /10:41 /11:94 /12:298 /13:578 /14:1193 /15:2091 /16:13643 /17:8136 /18:13404 /19:24586 /20:44315 /21:51858 /22:112684 /23:104637 /24:632602 /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 6743 12539 UNINET, MX 12479 6232 7290 UNI2-AS, ES 11492 3598 4785 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 2996 4676 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2817 3855 VIASAT-SP-BACKBONE, US 16509 2421 14213 AMAZON-02, US 30036 2314 2658 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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) ---------------------------------------------- 1:2446 2:1530 3:961 4:10 5:4936 6:189 7:6 8:1513 9:6 11:172 12:1233 13:548 14:2595 15:409 16:303 17:387 18:902 20:583 21:4 22:188 23:8021 24:2557 25:2 27:2783 29:19 31:3354 32:31 33:1 34:84 35:274 36:4546 37:4561 38:9297 39:1174 40:444 41:4446 42:1945 43:2847 44:400 45:19263 46:5142 47:374 49:2154 50:2055 51:592 52:1623 54:352 55:1107 56:11 57:290 58:2314 59:1319 60:1187 61:3026 62:3078 63:1736 64:5909 65:2117 66:5886 67:3237 68:1488 69:4118 70:1039 71:624 72:3003 74:2899 75:1510 76:599 77:2760 78:1910 79:1784 80:2279 81:2112 82:3670 83:1466 84:2001 85:3578 86:1101 87:2134 88:1328 89:4596 90:837 91:8381 92:2808 93:2985 94:4148 95:4527 96:1458 97:310 98:953 99:762 100:68 101:1345 102:4259 103:32768 104:5458 105:777 106:911 107:2798 108:1191 109:4221 110:2253 111:3868 112:2754 113:1898 114:2084 115:2245 116:2125 117:3094 118:3070 119:2044 120:2344 121:1502 122:2853 123:2266 124:1645 125:2926 126:125 128:1575 129:960 130:1485 131:2240 132:770 133:461 134:1626 135:365 136:1493 137:1136 138:2858 139:1594 140:1701 141:1554 142:2249 143:2137 144:1328 145:634 146:2175 147:2108 148:2778 149:2842 150:1294 151:2640 152:2265 153:598 154:8125 155:2237 156:3339 157:2207 158:1408 159:2656 160:3676 161:2007 162:3978 163:2327 164:1953 165:2564 166:1318 167:2121 168:3842 169:781 170:5436 171:1090 172:4466 173:3418 174:910 175:1353 176:3760 177:4687 178:4284 179:2285 180:2893 181:4333 182:3795 183:2556 184:2059 185:21654 186:5415 187:4720 188:4386 189:4433 190:9691 191:1519 192:11407 193:9505 194:7841 195:5586 196:3248 197:3333 198:6061 199:6091 200:8055 201:6376 202:10409 203:10555 204:4627 205:3634 206:4359 207:3717 208:4266 209:5331 210:4708 211:2647 212:4883 213:3998 214:1039 215:54 216:7116 217:3347 218:1572 219:403 220:2200 221:1265 222:762 223:3120 End of report