[REN-BGP-stats-all] IPv4 R&E Routing Table Report - MARWAN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Sun Jun 29 18:00:40 UTC 2025
IPv4 R&E Routing Table Report 18:00 GMT Sun 29 Jun, 2025
IPv4 BGP Table (R&E) as seen at MARWAN.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/MARWAN/
Analysis Summary
----------------
BGP routing table entries examined: 17849
Prefixes after maximum aggregation (per Origin AS): 9643
Deaggregation factor: 1.85
Unique aggregates announced (without unneeded subnets): 10544
Number of IPv4 prefixes with a valid ROA: 7175
Number of IPv4 prefixes with an invalid ROA: 96
Number of IPv4 prefixes with no ROA: 10578
Total ASes present in the Internet Routing Table: 2612
Prefixes per ASN: 6.83
Origin-only ASes present in the Internet Routing Table: 2267
Origin ASes announcing only one prefix: 1008
Transit ASes present in the Internet Routing Table: 345
Transit-only ASes present in the Internet Routing Table: 61
Paths with bogon ASNs present in the IPv4 Routing Table: 1
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 18
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 34
Number of instances of unregistered ASNs: 34
Number of 32-bit ASNs allocated by the RIRs: 46719
Number of 32-bit ASNs visible in the Routing Table: 672
Prefixes from 32-bit ASNs in the Routing Table: 1799
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 4
Number of addresses announced to Internet: 186487474
Equivalent to 11 /8s, 29 /16s and 146 /24s
Percentage of available address space announced: 5.0
Percentage of allocated address space announced: 5.0
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: 2745
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4207
Total APNIC prefixes after maximum aggregation: 1961
APNIC Deaggregation factor: 2.15
Prefixes being announced from the APNIC address blocks: 4206
Unique aggregates announced from the APNIC address blocks: 2164
APNIC Region origin ASes present in the Internet Routing Table: 549
APNIC Prefixes per ASN: 7.66
APNIC Region origin ASes announcing only one prefix: 239
APNIC Region transit ASes present in the Internet Routing Table: 47
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 231
Number of APNIC addresses announced to Internet: 38778945
Equivalent to 2 /8s, 79 /16s and 184 /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: 7674
Total ARIN prefixes after maximum aggregation: 4460
ARIN Deaggregation factor: 1.72
Prefixes being announced from the ARIN address blocks: 7722
Unique aggregates announced from the ARIN address blocks: 4952
ARIN Region origin ASes present in the Internet Routing Table: 1239
ARIN Prefixes per ASN: 6.23
ARIN Region origin ASes announcing only one prefix: 426
ARIN Region transit ASes present in the Internet Routing Table: 149
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 212
Number of ARIN addresses announced to Internet: 86626464
Equivalent to 5 /8s, 41 /16s and 208 /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: 3212
Total RIPE prefixes after maximum aggregation: 2655
RIPE Deaggregation factor: 1.21
Prefixes being announced from the RIPE address blocks: 3198
Unique aggregates announced from the RIPE address blocks: 2662
RIPE Region origin ASes present in the Internet Routing Table: 583
RIPE Prefixes per ASN: 5.49
RIPE Region origin ASes announcing only one prefix: 264
RIPE Region transit ASes present in the Internet Routing Table: 96
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 138
Number of RIPE addresses announced to Internet: 56425360
Equivalent to 3 /8s, 92 /16s and 251 /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: 1374
Total LACNIC prefixes after maximum aggregation: 492
LACNIC Deaggregation factor: 2.79
Prefixes being announced from the LACNIC address blocks: 1373
Unique aggregates announced from the LACNIC address blocks: 671
LACNIC Region origin ASes present in the Internet Routing Table: 132
LACNIC Prefixes per ASN: 10.40
LACNIC Region origin ASes announcing only one prefix: 53
LACNIC Region transit ASes present in the Internet Routing Table: 26
Average LACNIC Region AS path length visible: 5.6
Max LACNIC Region AS path length visible: 15
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 61
Number of LACNIC addresses announced to Internet: 4009536
Equivalent to 0 /8s, 61 /16s and 46 /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: 1348
Total AfriNIC prefixes after maximum aggregation: 69
AfriNIC Deaggregation factor: 19.54
Prefixes being announced from the AfriNIC address blocks: 1345
Unique aggregates announced from the AfriNIC address blocks: 91
AfriNIC Region origin ASes present in the Internet Routing Table: 45
AfriNIC Prefixes per ASN: 29.89
AfriNIC Region origin ASes announcing only one prefix: 26
AfriNIC Region transit ASes present in the Internet Routing Table: 9
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 18
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 644608
Equivalent to 0 /8s, 9 /16s and 214 /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
2907 611 2169 463 SINET-AS Research Organization of Informa
7497 452 180 23 CSTNET-AS-AP Computer Network Information
4538 196 4192 71 ERX-CERNET-BKB China Education and Resear
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 281 116 AARNET-AS-AP Australian Academic and Rese
55824 148 19 21 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 59 35 8 UNINET-AS-AP UNINET-, TH
6262 51 133 45 CSIRO Commonwealth Scientific and Industr
38280 50 3 2 MONASHUNI-MY-AS-AP Monash University Sunw
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 200 162 150 RISQ-AS, CA
5786 200 16 1 UPRENET, PR
2920 176 34 7 LACOE, US
2152 146 491 96 CENIC-2152, US
18558 139 18 4 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
23024 99 7 17 OCDE, US
21976 88 34 14 NJEDGE-NET, US
237 86 544 52 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 250 DFN Verein zur Foerderung eines Deutschen
786 194 1742 187 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 96 1487 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 92 26 69 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 75 366 75 BELWUE BelWue-Koordination, DE
2200 63 614 58 FR-RENATER Reseau National de telecommuni
200521 59 4 24 SEAP-AGE, ES
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 326 177 42 Rede Nacional de Ensino e Pesquisa, BR
28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M
11340 110 25 52 Red Universitaria Nacional, CL
271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 52 3 21 CEDIA, EC
2715 48 99 36 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
3596 40 8 4 Universidad Autonoma Metropolitana, MX
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
30983 635 4 5 MARWAN-AS, MA
36914 567 82 3 KENET-AS, KE
37215 37 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
327700 11 16 1 MoRENet, MZ
37654 10 1 6 RwEdNet-AS, RW
327947 7 4 1 KNUST-, GH
327798 4 0 3 BERNET, BI
328903 4 0 1 RITER, CI
37661 3 6 3 NRaE1-AS, NG
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
30983 635 4 5 MARWAN-AS, MA
2907 611 2169 463 SINET-AS Research Organization of Informa
36914 567 82 3 KENET-AS, KE
7497 452 180 23 CSTNET-AS-AP Computer Network Information
1916 326 177 42 Rede Nacional de Ensino e Pesquisa, BR
680 284 1899 250 DFN Verein zur Foerderung eines Deutschen
376 200 162 150 RISQ-AS, CA
5786 200 16 1 UPRENET, PR
4538 196 4192 71 ERX-CERNET-BKB China Education and Resear
786 194 1742 187 JANET Jisc Services Limited, GB
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 567 564 KENET-AS, KE
7497 452 429 CSTNET-AS-AP Computer Network Information Cente
1916 326 284 Rede Nacional de Ensino e Pesquisa, BR
5786 200 199 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 176 169 LACOE, US
2907 611 148 SINET-AS Research Organization of Information a
18558 139 135 NETBLK-RCOEK, US
55824 148 127 NKN-CORE-NW NKN Core Network, IN
4538 196 125 ERX-CERNET-BKB China Education and Research Net
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
65000 PRIVATE 102.216.118.0/24 30983 MARWAN-AS, MA
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
26898 UNALLOCATED 131.187.248.0/22 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.248.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.249.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.250.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.251.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 198.30.187.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.80.0/20 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.80.0/24 3112 OARNET-AS-1, US
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-badAS
Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.168.167.1/32 30983 MARWAN-AS, MA
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
192.168.167.1/32 Origin: 30983 MARWAN-AS, MA
192.168.167.1/32 Transit: 0 UNALLOCATED
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
!!Default route being announced!!
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:1 /11:0 /12:9
/13:17 /14:34 /15:109 /16:1883 /17:378 /18:444
/19:551 /20:781 /21:765 /22:1252 /23:1360 /24:9477
/25:53 /26:81 /27:48 /28:13 /29:70 /30:5
/31:2 /32:514
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
30983 610 635 MARWAN-AS, MA
36914 543 567 KENET-AS, KE
1916 85 326 Rede Nacional de Ensino e Pesquisa, BR
23024 38 99 OCDE, US
200521 34 59 SEAP-AGE, ES
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
32440 31 57 LONI, US
37215 31 37 MAREN, MW
25977 30 44 HCCS, US
Complete listing at https://bgp.nsrc.org/REN/MARWAN/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1 5:16 8:2 12:1 14:93 23:9
24:2 31:1 35:9 37:14 38:10 40:1
41:224 42:17 44:5 45:37 46:5 47:1
49:12 50:2 52:1 58:16 59:20 60:6
61:3 62:5 63:32 64:43 65:5 66:34
67:39 68:12 69:17 70:2 71:1 72:8
74:53 76:32 77:6 78:3 79:9 80:9
81:27 82:3 83:7 84:5 85:31 87:1
89:10 91:34 93:15 94:2 95:2 96:5
97:1 98:2 101:3 102:10 103:336 104:79
108:8 109:4 110:1 111:17 113:1 114:15
116:7 117:1 118:33 119:31 121:28 122:8
123:8 124:42 125:3 128:55 129:43 130:95
131:61 132:68 133:156 134:80 136:200 137:51
138:10 139:5 140:31 141:4 142:27 143:21
144:17 145:2 146:126 147:47 148:200 149:10
150:30 151:11 152:120 153:15 154:15 155:69
156:133 157:24 158:25 159:116 160:34 161:17
162:22 163:72 164:10 165:43 167:12 168:58
169:7 170:18 172:2 173:6 175:16 177:5
179:13 180:16 181:1 182:11 184:8 185:38
186:3 187:25 188:14 190:17 191:13 192:1377
193:261 194:107 195:75 196:27 197:351 198:410
199:243 200:305 201:38 202:596 203:337 204:363
205:128 206:201 207:216 208:64 209:118 210:107
211:3 212:44 213:4 216:91 217:22 218:20
219:7 220:7 222:3 223:6
End of report
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